TY - BOOK AU - Stefoff,Rebecca TI - Extinction SN - 0791015785 (alk. paper : hard) : AV - QE721.2.E97S75 1991 S75 1991 PY - 1992/// CY - New York PB - Chelsea House KW - Extinction (Biology) KW - Juvenile literature N2 - 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 ER -