00251nam a2200109Ia 4500008004100000041000800041082001900049100001600068245004000084260000900124300000800133211209s1979    xx            000 0 und d  aeng  a620.11 N78 AGA  aAGARWAL C V  aCHEMISTRY OF ENGINEERING MATERIALS   c1979  a485