000 00294nam a2200121Ia 4500
008 220201s1957 xx 000 0 eng d
082 _a530
_bMAT
100 _aMathur, RS & Srivastva GN
245 0 _aSurvey of practical physics
260 _bS Chand & co
_c1957
300 _a220
942 _2ddc
999 _c71418
_d71418