Exploring science / Jonathan N. Leonard. Illustrations by Louis Darling and I. N. Steinberg. Leonard, Jonathan N. ill. Darling, Louis, ill. Steinberg, I. N., Science Juvenile literature. Astronomy Juvenile literature. Anthropology. 508.3 LEE Includes index. Cleveland : The World Publishing, c1959. c1959. 1959 Text 318 p. : eng