00241nam a2200109Ia 4500008004100000041000800041082002200049100001200071245003100083260000900114300000800123211209s1978    xx            000 0 und d  aeng  a621.402 2 N78 JAK  aJAKOB H  aELEMENTS OF HEAT TRANSFAR   c1978  a316