00581nam a22001937a 4500003000400000008004100004020001800045082001600063100002300079245009600102250001200198260004400210300001000254650002000264650003300284650002700317650002600344650001700370OSt231031b        |||||||| |||| 00| 0 eng d  a9788190724654  a363.7bK55P  aKhan, Wasim Ahmad.  aParyavaran Vigyan Vishwakosh : paryavaran evam bhu-vigyan / cby Wasim Ahmad Khan; Khand- 4  a1st ed.  a.- New Delhib: Rajat Prakashanc, 2011  a288p.  aSocial Sciences  aSocial Problems and Services  aEnvironmental Sciences  aEnvironmental Aspects  aEncyclopedia