TY - BOOK AU - Shogren, Jason F. AU - Tschirhart, John. CN - QH76 CN - QH76 CY - Cambridge ; CY - New York, NY : DA - 2001. ID - 256001 KW - Endangered species KW - Nature conservation KW - Nature conservation PB - Cambridge University Press, PP - Cambridge ; PP - New York, NY : PY - 2001. SN - 0521662109 T1 - Protecting endangered species in the United States :biological needs, political realities, economic choices / TI - Protecting endangered species in the United States :biological needs, political realities, economic choices / ER -