00283nam a2200121Ia 4500008004100000041000800041082001600049100001800065245003200083250001000115260002800125300000800153211209s1973    xx            000 0 und d  aeng  a530 N73 BEI  aBEISER ARTHUR  aCONCEPTS OF MODERN PHYSICS   a2 ed.  bCALICO PUBLISHERSc1973  a464