00628nam a22002177a 4500 OSt 231031b |||||||| |||| 00| 0 eng d 9788190724654 363.7 K55P Khan, Wasim Ahmad. Paryavaran Vigyan Vishwakosh : paryavaran vigyan / by Wasim Ahmad Khan; Khand- 1 1st ed. .- New Delhi : Rajat Prakashan , 2011 v,271p. Social Sciences Social Problems and Services Environmental Sciences Environmental Aspects Encyclopedia ddc RFB 33377 33377 0 0 ddc 0 0 RAU RAU REF 2023-10-31 Sharma Book Company 0 363.7 K55P 71160 2023-10-31 0000-00-00 RFB