000 00335nam a2200157Ia 4500
008 230706s9999 xx 000 0 und d
082 _a530.028
082 _bRAY
100 _aRAY,CHOUDHARY,SEN
245 0 _aPratical Physics
260 _aNew Delhi
260 _bA MUKHERJEE & CO
260 _c1951
650 _aPhysics
942 _cS
999 _c13
_d13