Sadil, Josef. Our planet earth from the beginning illustrated by Ludek Pesek; translation [from the Czech] by Kaca Polackova. - London, Hamlyn, 1968. ISBN: 50/- LCCN: 68124011 Nat. Bib. No.: B68-11132 Subjects--Geographic Terms: Earth. LC Class. No.: QE501 / .S213 Dewey Class. No.: 551.7/022/2