000 00241 a2200097 4500
020 _a9789355010940
100 _aSINGH, HARNAM/ HEMNE P.S.
245 _aB.Sc PRACTICAL PHYSICS
250 _a1
260 _bSCHAND AND COMPANY LTD., NEW DELHI
_c2022
999 _c86227
_d86227