00331nam a2200109Ia 450000500170000008000180001710000110003524501200004626000260016630000100019258300190020220260716043106.0  a07.08.01 U586  aUNESCO  aDisappearing tropical forests : water-related issues and problems of the humid tropics and other warm humid regions  bUNESCOaParisFRc1991  a48 p.  c3/7/00kM2LMGR