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1978, Atheneum
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1976, St. Martin's Press
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1955, Fawcett Crest
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1984, Ballantine Books
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1972, Appleton-Century-Crofts
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1982, Doubleday
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1985, Arbor House
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1972, Doubleday
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1962, Bantam Books
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1958, J.B. Lippincott
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1959, New American Library
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July 1, 1987, Spectra
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1992, World book, World Book
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1974, Avon
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1989, Doubleday
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1972, Fawcett Publications
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1990, Doubleday
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1978, Fawcett Crest
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1957, Fawcett Publications
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1954, Ballantine Books
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1978, Berkley Pub. Corp. : distributed by Putnam
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1966, Avon
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1981, Avenel Books Distributed by Crown Publishers
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1992, Bantam Books, Spectra
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2000, Bantam Books, Spectra
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1987-12, Del Rey
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1992, Ballatine Books
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1964, Doubleday
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1974, Avon
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1985, Atheneneum
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1984, Berkley
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1990, T. Doherty Associates
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1960, New American Library
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1989, Atheneum
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1983, Berkley Books
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1986, D.I. Fine
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1986, Ace Science Fiction Books, Berkley
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1984, Pocket Books
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1991, St. Martin's Press
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1981, Ace Books
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1965, Doubleday
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1966, Avon Books
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1985, Bantam Books
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1971, Beagle Books
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1973, Putnam
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1979, Avon Books
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1988, Arbor House, Morrow
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1994, Bantam Books
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1998, Bantam Books
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1990, Carroll & Graf Publishers
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1989, Atheneum
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1989, Ballantine Books
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1989, G. Stevens
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1981, Wallaby Books, Distributed by Pocket Books
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1971, Doubleday
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1975, Gregg Press
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1969, Walker and Company
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1964, F. Watts
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1957, Ballantine Books
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1974, Ace Books
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1976, Harcourt Brace Jovanovich
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1987, Ballantine Books
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1990, Earthbooks
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1961, Nelson Doubleday
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1977, Pocket Book
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1919, University of Chicago Press
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1975, Daw Books
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1970, GuildAmerica Books
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1972, Pinnacle Books
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1964, New American Library
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1978, Ace Books
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1987, Carroll & Graf
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1979, St. Martin's Press
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1961, Gollancz
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1996, Presidio
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1970, N. Doubleday, Inc.
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1870, W. B. Kelly, Catholic Publishing Society
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1913, Hodder and Stoughton