00318nam a2200133Ia 4500008004100000041001200041082001100053100001600064245003100080260003700111300000800148650001500156700001300171221030s9999    xx            000 0 und d  aEnglish  a105.23  aS. L. Gupta 0aConcepts Of Modern Physics  bDhanpat Rai PubaNew Delhic2002  a628  aBB Physics  aS. Gupta