00438aam a2200169   4500003000200000005001700002008004100019020001500060040000600075082001600081100001700097245005600114260003600170300001000206650003500216700001700251 20260422162507.0140223b1981    xxu||||| |||| 00| 0 eng d  a8576250430  c   a333.715 GUP  aGupta, Sunit  aNatural resource management: need for 21st century/  aNew DelhibSarup and Sonsc1998  a442p.  aNatural resources - Management  aGupta, Mukta