00261nam a2200109Ia 4500008004100000041001200041082001100053100001700064245005800081260000600139650000600145221030s9999    xx            000 0 und d  aEnglish  a105.23  aS. C. Mathur 2aA Text book of Engineering Mechanicscby S. C. Mathur  c0  aB