@Book{OL2531119M,
    title: {Simon \& Schuster's Guide to cacti and succulents},
    author: {Mariella Pizzetti},
    publisher: {Simon and Schuster},
    year: {1985},
    place: {New York},
}

@Book{OL21095563M,
    title: {Trees of North America},
    author: {Brockman, C. Frank},
    publisher: {Golden Books},
    year: {1996},
    place: {New York},
}

@Book{OL8328342M,
    title: {Marine Invertebrates and Plants of the Living Reef},
    author: {Patrick I. Colin},
    publisher: {TFH Publications},
    year: {1988},
}

@Book{OL18675905M,
    title: {A field guide to insects},
    author: {Donald Joyce Borror},
    publisher: {Houghton Mifflin},
    year: {1987},
    place: {Boston},
}

@Book{OL4407215M,
    title: {Spotter's handbook},
    author: {Michael Ruggiero},
    publisher: {Mayflower Books},
    year: {1979},
    place: {New York},
}

@Book{OL3792693M,
    title: {The Audubon Society field guide to North American seashore creatures},
    author: {Norman August Meinkoth},
    publisher: {A.A. Knopf},
    year: {1981},
    place: {New York},
}

@Book{OL7465676M,
    title: {A Field Guide to Trees and Shrubs},
    author: {George A. Petrides},
    publisher: {Houghton Mifflin (P)},
    year: {1973},
}

@Book{OL21149029M,
    title: {A field guide to animal track},
    author: {Olaus Johan Murie},
    publisher: {Houghton Mifflin},
    year: {1975},
    place: {Boston, MA},
}

@Book{OL4742410M,
    title: {The tree key},
    author: {Herbert L. Edlin},
    publisher: {Scribner},
    year: {1978},
    place: {New York},
}

@Book{OL1421120M,
    title: {Peterson first guide to urban wildlife},
    author: {Sarah Landry},
    publisher: {Houghton Mifflin},
    year: {1994},
    place: {Boston},
}

@Book{OL8760634M,
    title: {Flattened Fauna},
    author: {Roger M. Knutson},
    publisher: {Ten Speed Press},
    year: {2006},
}

@Book{OL702743M,
    title: {Berries, nuts, and seeds},
    author: {Diane L. Burns},
    publisher: {Gareth Stevens Pub.},
    year: {2000},
    place: {Milwaukee, Wis},
}

@Book{OL1898611M,
    title: {Nature guide to the Carolina coast},
    author: {Meyer, Peter},
    publisher: {Avian-Cetacean Press},
    year: {1991},
    place: {Wilmington, NC},
}

@Book{OL19060537M,
    title: {Spiders and their kin},
    author: {Herbert Walter Levi and Herbert W. Levi and Lorna  R. Levi},
    publisher: {St. Martin's Press},
    year: {1996},
    place: {New York},
}

@Book{OL7468955M,
    title: {Peterson First Guide to Reptiles and Amphibians},
    author: {Roger Conant},
    publisher: {Houghton Mifflin},
    year: {1999},
}

@Book{OL9773879M,
    title: {Weeds},
    author: {Alexander C. Martin},
    publisher: {Random House},
    year: {1974},
}

@Book{OL24968735M,
    title: {Harper \& row's complete field guide to north american wildlife},
    author: {Jay Ransom},
    publisher: {Harpercollins Pub},
    year: {1981},
    place: {[S.l.]},
}

@Book{OL8699745M,
    title: {California Marine Life},
    author: {Marty Snyderman and Marty Synderman},
    publisher: {Roberts Rinehart Publishers},
    year: {1998},
}

@Book{OL23244668M,
    title: {A field guide to eastern butterflies},
    author: {Paul A. Opler},
    publisher: {Houghton Mifflin},
    year: {1998},
    place: {Boston},
}

@Book{OL5202410M,
    title: {A field guide to the mammals},
    author: {William Henry Burt},
    publisher: {Houghton Mifflin},
    year: {1976},
    place: {Boston},
}

@Work{OL2654909W,
    title: {Peterson Field Guide to Birds of North America},
    author: {Roger Tory Peterson},
    first_publish_year: {2008}
}

@Work{OL4651326W,
    title: {A field guide to insects},
    author: {Donald Joyce Borror},
    first_publish_year: {1987}
}

@Work{OL1856179W,
    title: {A field guide to reptiles \& amphibians},
    author: {Conant, Roger},
    first_publish_year: {1991}
}

@Work{OL8035413W,
    title: {National Audubon Society field guide to North American insects and spiders},
    author: {Lorus Johnson Milne and Margery Milne},
    first_publish_year: {1980}
}

@Work{OL18178777W,
    title: {The Sibley guide to trees},
    author: {David Sibley},
    first_publish_year: {2009}
}

@Work{OL1178463W,
    title: {The Smithsonian guide to seaside plants of the Gulf and Atlantic coasts from Louisiana to Massachusetts, exclusive of lower peninsular Florida},
    author: {Wilbur Howard Duncan},
    first_publish_year: {1987}
}

@Work{OL2654938W,
    title: {A field guide to wildflowers of Northeastern and North-Central North America},
    author: {Roger Tory Peterson and Roger Tory Peterson Institute},
    first_publish_year: {1968}
}

@Work{OL4988143W,
    title: {The Audubon Society field guide to North American seashells},
    author: {Harald Alfred Rehder},
    first_publish_year: {1981}
}

@Work{OL17705622W,
    title: {Mammals of North America},
    author: {Don E. Wilson and Roland W. Kays},
    first_publish_year: {2002}
}

@Work{OL1856193W,
    title: {A field guide to eastern trees},
    author: {George A. Petrides},
    first_publish_year: {1988}
}

@Work{OL15397513W,
    title: {The Audubon Society field guide to North American Trees, eastern region},
    author: {Elbert L. Little},
    first_publish_year: {1983}
}

@Work{OL4477919W,
    title: {Insects that feed on trees and shrubs},
    author: {Warren T. Johnson},
    first_publish_year: {1976}
}

@Work{OL3279345W,
    title: {A guide to the mammals of the southeastern United States / Larry N. Brown},
    author: {Larry N. Brown},
    first_publish_year: {1997}
}

@Work{OL16999118W,
    title: {Whales, dolphins, and porpoises of the eastern North Pacific and adjacent Arctic waters},
    author: {Stephen Leatherwood},
    first_publish_year: {1988}
}

@Work{OL1131883W,
    title: {A field guide to the mammals},
    author: {William Henry Burt},
    first_publish_year: {1952}
}

@Work{OL1995548W,
    title: {A field guide to hawks, North America},
    author: {Clark, William S.},
    first_publish_year: {1987}
}

@Work{OL5101841W,
    title: {A field guide to Atlantic Coast fishes of North America},
    author: {C. Richard Robins},
    first_publish_year: {1986}
}

@Work{OL5352324W,
    title: {A field guide to Western birds' nests},
    author: {Hal H. Harrison},
    first_publish_year: {1979}
}

@Work{OL4491136W,
    title: {A field guide to Pacific Coast fishes of North America},
    author: {William N. Eschmeyer},
    first_publish_year: {1983}
}

@Work{OL5351177W,
    title: {Field guide to edible wild plants},
    author: {Bradford Angier},
    first_publish_year: {1974}
}

@Work{OL13735195W,
    title: {Sierra Nevada wildflowers},
    author: {Karen Wiese},
    first_publish_year: {2000}
}

@Work{OL3973239W,
    title: {A field guide to whales, porpoises, and seals from Cape Cod to Newfoundland},
    author: {Steven K. Katona},
    first_publish_year: {1993}
}

@Work{OL4686090W,
    title: {Guide to corals \& fishes of Florida, the Bahamas and the Caribbean},
    author: {Idaz Greenberg},
    first_publish_year: {1977}
}

@Work{OL2956678W,
    title: {Rodale's garden insect, disease \& weed identification guide},
    author: {Miranda Smith},
    first_publish_year: {1988}
}

@Work{OL5111985W,
    title: {A field guide to western butterflies},
    author: {James W. Tilden},
    first_publish_year: {1986}
}

@Work{OL6338073W,
    title: {A field guide to mushrooms and their relatives},
    author: {Booth Courtenay},
    first_publish_year: {1982}
}

@Work{OL4077356W,
    title: {Field guide to freshwater fishes of North America},
    author: {A. J. McClane},
    first_publish_year: {1978}
}

@Work{OL17946277W,
    title: {Charophytes of North America},
    author: {Richard Dawson Wood},
    first_publish_year: {1967}
}

@Work{OL15857790W,
    title: {Trees of Michigan},
    author: {Stan Tekiela},
    first_publish_year: {2002}
}

@Work{OL1857661W,
    title: {The Audubon Society field guide to North American butterflies},
    author: {Robert Michael Pyle},
    first_publish_year: {1981}
}

@Work{OL2652964W,
    title: {A field guide to warblers of North America},
    author: {Jon Dunn},
    first_publish_year: {1997}
}

@Work{OL13752468W,
    title: {National Geographic field guide to the birds of eastern North America},
    author: {Dunn, Jon L. (EDT)/ Alderfer, Jonathan (EDT)/ Lehman, Paul (CON)},
    first_publish_year: {2008}
}

@Work{OL5335207W,
    title: {Marine flora and fauna of the northeastern United States},
    author: {David L. Pawson},
    first_publish_year: {1977}
}

@Work{OL8035415W,
    title: {The National Audubon Society Field Guide to North American Reptiles and Amphibians},
    author: {National Audubon Society},
    first_publish_year: {1979}
}

@Work{OL8035455W,
    title: {National Audubon Society Field Guide to North American Wildflowers},
    author: {National Audubon Society},
    first_publish_year: {2001}
}

@Work{OL5769609W,
    title: {Animal Tracks of Illinois (Animal Tracks Guides)},
    author: {Tamara Eder},
    first_publish_year: {2001}
}

@Work{OL3515009W,
    title: {The fern guide},
    author: {Edgar Theodore Wherry},
    first_publish_year: {1961}
}

@Work{OL3263719W,
    title: {Peterson first guide to insects of North America},
    author: {Christopher W. Leahy},
    first_publish_year: {1987}
}

@Work{OL4308510W,
    title: {Peterson first guide to caterpillars of North America},
    author: {Amy Bartlett Wright},
    first_publish_year: {1993}
}

@Work{OL4651327W,
    title: {A field guide to the insects of America north of Mexico},
    author: {Donald Joyce Borror},
    first_publish_year: {1970}
}

@Work{OL3476563W,
    title: {Seashells of North America},
    author: {R. Tucker Abbott},
    first_publish_year: {1968}
}

@Work{OL3469670W,
    title: {What bird did that?},
    author: {Peter Hansard},
    first_publish_year: {1990}
}

@Work{OL15830553W,
    title: {A field guide to mammal tracking in North America},
    author: {James C. Halfpenny},
    first_publish_year: {1986}
}

@Work{OL3515501W,
    title: {Amphibians of North America},
    author: {Hobart Muir Smith},
    first_publish_year: {1978}
}

@Work{OL3508914W,
    title: {Freshwater Fish (American Nature Guides)},
    author: {Henry W. Robison},
    first_publish_year: {1992}
}

@Work{OL7857962W,
    title: {A Field Guide to Mammals},
    author: {William H. Burt},
    first_publish_year: {1998}
}

@Work{OL1901059W,
    title: {A field guide to wildflowers of the Rocky Mountains},
    author: {Carl Schreier},
    first_publish_year: {1996}
}

@Work{OL1246281W,
    title: {A field guide to western reptiles and amphibians},
    author: {Robert C. Stebbins},
    first_publish_year: {1966}
}

@Work{OL15123912W,
    title: {National Geographic Field Guide to the Birds of North America},
    author: {National Geographic Society},
    first_publish_year: {1999}
}

@Work{OL4075755W,
    title: {Ocean birds of the nearshore Pacific},
    author: {Rich Stallcup},
    first_publish_year: {1990}
}

@Work{OL16578621W,
    title: {Stokes field guide to birds},
    first_publish_year: {1994}
}

@Work{OL2732326W,
    title: {Pacific Coast pelagic invertebrates},
    author: {David Wrobel},
    first_publish_year: {1998}
}

@Work{OL1946710W,
    title: {Pacific coast subtidal marine invertebrates},
    author: {Daniel Gotshall},
    first_publish_year: {1979}
}

@Work{OL8035422W,
    title: {National Audubon Society Field Guide to Wildflowers},
    author: {National Audubon Society},
    first_publish_year: {1979}
}

@Work{OL18181356W,
    title: {The ultimate guide to wildlife of North America},
    author: {Bryan Richard},
    first_publish_year: {2011}
}

@Work{OL1934474W,
    title: {A guide to California's freshwater fishes},
    author: {Bob Madgic},
    first_publish_year: {1999}
}

@Work{OL17878225W,
    title: {Bumble bees of the western United States},
    author: {Jonathan Koch},
    first_publish_year: {2012}
}

@Work{OL4467663W,
    title: {Mushrooms demystified},
    author: {David Arora},
    first_publish_year: {1979}
}

@Work{OL2297490W,
    title: {Gulf publishing field guides},
    author: {Tennant, Alan},
    first_publish_year: {1999}
}

@Work{OL4644299W,
    title: {Peterson first guide to shells of North America},
    author: {Jackie Leatherbury Douglass},
    first_publish_year: {1989}
}

@Work{OL16911698W,
    title: {A guide to the land snails and slugs of Montana},
    author: {Paul Hendricks},
    first_publish_year: {2012}
}

@Work{OL1849148W,
    title: {National Audubon Society field guide to North American mammals},
    author: {John O. Whitaker},
    first_publish_year: {1996}
}

@Work{OL5680781W,
    title: {Ducks at a distance},
    author: {Bob Hines},
    first_publish_year: {1963}
}

@Author{OL1385039A,
    name: {Bob Hines},
}