00278nam a2200121Ia 4500008004100000041001200041082001100053100001500064245005000079260000600129650000600135700001500141221030s9999    xx            000 0 und d  aEnglish  a105.23  aH. S. Hans 0aPhysics- Mechanicscby H. S. Hans, S. P. Puri  c0  aB  aS. P. Puri