Munch, Theodore W. What is a solar system / Theodore W. Munch, - Chicago, Benefic Press [1959] - 41 p. illus. 21 cm. - The What is it series . Subjects--Topical Terms: Readers--Science. Subjects--Geographic Terms: Solar system--Juvenile literature. LC Class. No.: PE1127.S3 / M82 Dewey Class. No.: 523.2 / MUN 1959