TY - BOOK AU - Elliott, Hugh F. I, ed. TI - IUCN twelfth technical meeting, Banff, Alberta, Canada, 12 to 15 September 1972 ; edited by Hugh F. I. Elliott U1 - 333.7215 IUC PY - 1973/// CY - Morges PB - International Union for Conservation of Nature and Natural Resources KW - Conservation of natural resources ER -