00390nam a2200145 a 450000500170000000800410001702000150005804100080007308200100008110000160009124500630010725000120017026400370018230000250021920260717092047.0260717s2003    ii            000 0 eng d  a8185771804  aeng04a363.71 aRam Prakash10aEnvironment : Global Changes and Challenges /cRam Prakash  a1st Ed. 1aJaipur :bABD Publishers,c2003.  avii, 300 p. ; 22 cm.