00246nam a2200109Ia 4500008004100000041000800041082002300049100001000072245003700082260000900119300000800128211209s1978    xx            000 0 und d  aeng  a620.11 N77 GUP/GUP  aGUPTA  aMATERIALS SCIENCE AND PROCESSES   c1978  a290