TY - BOOK ID - 133496133 TI - Biotic provinces of the world : further development of a system for defining and classifying natural regions for purposes of conservation PY - 1974 VL - no. 9 PB - Morges, Switzerland : International Union for Conservation of Nature and Natural Resources, DB - UniCat KW - Life zones KW - Nature conservation KW - Biomes KW - Nature KW - Conservation UR - https://www.unicat.be/uniCat?func=search&query=sysid:133496133 AB - ER -