How did we find out the earth is round?

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Bibliographic Details
Main Author:	Asimov, Isaac, 1920-1992
Format:	Book
Language:	English
Published:	N.Y., Walker [c1972]
Subjects:	Earth (Planet > Figure > Juvenile literature. Earth (Planet)

Hennepin County Library

Holdings details from Hennepin County Library
Call Number:	QB631.A76