000 00272nam a2200121Ia 4500
082 _a530
_bSIN
100 _aSingh, A.K.
245 _aProblems in physics
250 _a3rd
260 _aNew Delhi
_bNew Age International ( P ) Ltd.
_c1998
300 _a568p.
650 _aPhysics
999 _c742
_d742