01032cam a2200313 4500 64398976 TxAuBib 20000112120000.0 000112s1993||||||||||||||||||||||||eng|u 93020154 9780836808063 0836808061 KyAlM KyAlM TxAuBib Asimov, Isaac. Why do we need sleep / by Isaac Asimov and Carrie Dierks. Milwaukee, Wis. : Gareth Stevens, 1993. 24 p. : ill., col. photos. Ask Isaac Asimov Includes index. Includes glossary. Includes bibliography. This book gives a brief discussion of sleep, why we need it, what happens when we sleep, and sleep disorders. 4-8 Medialog, Inc. 20000112. Sleep. Sleep. Juvenile literature. Dierks, Carrie, jt. auth. Ask Isaac Asimov.