Transactions of the Symposium on the Biological Resources of the Chihuahuan Desert Region, United States and Mexico - Symposium on the Biological Resources of the Chihuahuan Desert Region, United States and Mexico (1974 : Sul Ross State University); Wauer, Roland H.; Riskind, David H. ([Estados Unidos] : U.S. Dept. of the Interior, National Park Service, 1977)
Keywords: BIOLOGIA DEL DESIERTO -- CHIHUAHUA (MEXICO) -- CONGRESOS