00465nam a2200133Ia 4500 20260716043035.0 17.05.05 U586 Research, education and training, and institutional arrangements required for the development of hydrologic and water resource management strategies in the humid tropics... : an appeal for assistance UNESCO ParisFR 1989 28 p. IDS 3/7/00 M2LMGR M U586 39215 39215