00000nam##2200000#a#4500099834SLIM2120201118011000.0201118s 0000 00eng dKhosla, ReetaBasics of environmental science (E BOOKS)Khosla, Reeta; Siddiqui, Zahid. H-Alpha Science2017environmental scienceKhosla, ReetaSiddiqui, Zahid. Hhttps://portal.igpublish.com/iglibrary/E book linkIT0012IT0012EPHRizvi College of Arts, Science and CommerceMMENGRM099834DigitalY