01202cam a2200325 4500 91568174 TxAuBib 19990716120000.0 910125s1992||||||||||||||||||||||||eng|u 91-2113 9780791015780 alk. paper : hard 0791015785 alk. paper : hard 9780791016039 paper 079101603X paper (OCoLC)23144272 DLC DLC DLC TxAuBib Stefoff, Rebecca, 1951- Extinction / by Rebecca Stefoff ; introduction by Russell E. Train. New York : Chelsea House, 1992. 126 p. : ill. ; 24 cm. Earth at risk Includes bibliographical references (p. 114-117) and index. Examines the extinction of various plants and animals, mankind's effect on the biosphere and species loss, and the preservation and protection of life forms. 19990716. tITLE. Extinction (Biology) Juvenile literature. Extinction (Biology.) Earth at risk. TXTLL