00281nam a2200109Ia 4500008004100000041000800041082002300049100001400072245003600086260004100122300000800163211209s1977    xx            000 0 und d  aeng  a620.11 N77 GUP/GUP  aGUPTA A K  aMATERIAL SCIENCE AND PROCESSES   aBANGALOREbS CHAND AND COMPANYc1977  a303