00436nam a2200133Ia 450000500170000008000180001710000200003524500990005526000870015430000140024158300180025594200120027399900170028520260716043706.0  a16.02.02 B919  aBucher, Enrique  aFreshwater ecosystem conservation : toward a comprehensive water resources management strategy  bIDB.  Environment Division. Sustainable Development DepartmentaWashingtonUSc1997  aii, 42 p.  c5/30/06kJOYD  cMmB919  c52400d52400