00317nam a2200121Ia 4500008004100000020001800041082001500059100001700074245004000091250001600131260003800147300001000185240307s9999||||xx |||||||||||||| ||und||  a9789388756471  a612bMan/A  aKatual,Manoj 2aA Textbook of Environmental Science  a1st Edition  aAgrabR.Narain Pub & Distributors  a160p.