000 00274nam a2200121Ia 4500
008 211209s1970 xx 000 0 und d
041 _aeng
082 _a620.11 N70 CHO
100 _aCHOUDHURY, ROY K P
245 _aENGINEERING MATERIALS
260 _c1970
300 _a304
999 _c13372
_d13372