Half-hours with the stars: a plain and easy guide to the knowledge of the constellations, showing, in 12 maps, the position of the principal star-groups night after night throughout the year, with introduction and a separate explanation of each map. True for every year
Half-hours with the stars: a plain and easy guide to the knowledge of the constellations, showing, in 12 maps, the position of the principal star-groups night after night throughout the year, with introduction and a separate explanation of each map. True for every year