00381nam a2200133Ia 4500008004100000020001500041041001200056100001500068245007200083260004900155300000800204650001700212700001800229221030s9999    xx            000 0 und d  a8122439663  aEnglish  aA. Kaushik 0aPerspectives in Environmental Studiescby A. Kaushik, C. P. Kaushik  bNew  Age International Pub.aNew Delhic2016  a357  aBB Chemistry  aC. P. Kaushik