00292nam a2200109Ia 4500008004100000041001200041100001400053245005400067260003500121300000900156650001700165221030s9999    xx            000 0 und d  aEnglish  aS. Rattan 2aA Textbook of Engineering Chemistrycby S. Rattan  bS. K. KatariaaNew Delhic2012  a1208  aBB Chemistry