00585nam a22001937a 4500003000400000008004100004020001800045082001600063100002300079245009800102250001200200260004400212300001200256650002000268650003300288650002700321650002600348650001700374OSt231031b        |||||||| |||| 00| 0 eng d  a9788190724654  a363.7bK55P  aKhan, Wasim Ahmad.  aParyavaran Vigyan Vishwakosh : paryavaran aur Paristhitikee / cby Wasim Ahmad Khan; Khand- 2  a1st ed.  a.- New Delhib: Rajat Prakashanc, 2011  av,303p.  aSocial Sciences  aSocial Problems and Services  aEnvironmental Sciences  aEnvironmental Aspects  aEncyclopedia