Harper, 1938 15 x 22, 474 pp., nombreuses photo. et figures, cartonnage éditeur, toilé d'éditeur, Bon état
"solar system and their origin; earth's crust - age of the earth; atmosphere and hydrosphere; our changing earth - earth's past; energy; structure of matter - inorganic and organic compounds; the sun; stars - plumbing the depths of the universe; ""carving o"