00509nam a2200169 a 450000500170000008200250001710000060004211000330004824500320008126000670011330000160018069000190019696400250021599700120024099900170025295200700026920251203091011.0  a574.5095483,bD, eco  d_  aEnvironmental Services Group  aEco-degradation at Kuttanad  aDelhibEnvironmental Services Group, World Wildlife fundc1987  a41p, 22 cm.  aEcology-Kerala  bEngc100de010fg_  a36798 C  c26312d26312  00104070aPUbPUd1998-04-08l0o574.5095483, D, ecop36798yBK