TY - BOOK AU - Lauber,Patricia AU - Lloyd,Megan TI - How we learned the earth is round /by Patricia Lauber ; illustrated by Megan Lloyd T2 - Let's-read-and-find-out science book SN - 9780064451093 AV - QB286 .H699 1992 PY - 1992/// CY - [New York] PB - HarperTrophy N1 - 2 N2 - Explains various changes in humanity's beliefs about the shape of the earth, from the flat earth theories of the ancients to the round earth theories which were proven true by the voyages of Columbus and Magellan ER -