TY - BOOK AU - Soulé, Michael E TI - Viable populations for conservation SN - 9780521336574 SN - 86033438 U1 - 574.5248 SOU PY - 1987/// CY - Cambridge PB - Cambridge University Press KW - Extinction (Biology) KW - Population biology KW - Wildlife conservation N1 - Includes bibliographical references and index ER -