00257nam a2200109Ia 4500008004100000041001200041082001100053100001500064245005600079260000600135650000600141221030s9999    xx            000 0 und d  aEnglish  a105.23  aS. S. Dara 2aA Text Book of Engineering Chemistrycby S. S. Dara  c0  aB