00234nam a2200109Ia 4500008004100000041000800041082002500049100001300074245002000087260000900107300000800116211209s1975    xx            000 0 und d  aeng  a621.4021 N75 GUR/RAJ  aGURUDEEP  aTHERMODYNAMICS   c1975  a250