Rubin, Esther. creator U.S. Fish and Wildlife Service Region 1. text bibliography oru Portland, Or.] The Region [2000] 2000 monographic eng xv, 251 p. maps (some fold.) 28 cm. specialized [Esther Rubin] ; U.S. Fish and Wildlife Service, Region 1. Includes bibliographical references. Bighorn sheep Colorado Desert (Calif. and Mexico) Wildlife conservation Colorado Desert (Calif. and Mexico) Bighorn sheep California, Southern Wildlife conservation California, Southern Rare mammals California, Southern Rare mammals Colorado Desert (Calif. and Mexico) PUCPR 011021 20160527190313.0 253010