00426nam a2200109Ia 4500 241024s9999||||xx |||||||||||||| ||und|| Proceedings of an Inter-Congress meeting 1980 United Nations University.127 GEOGRAPHY | DESERTIFICATION | ENVIRONMENTAL ASPECTS ENVIRONMENTAL ASPECTS 0 0 0 0 MIDS MIDS WP 0000-00-00 0 910.09154 M0 WP15464 2024-10-24 16:46:31 2024-10-24 WP 69809 69809