000 00281nam a2200121Ia 4500
008 230512s9999 xx 000 0 und d
100 _aGhosh,N.N
245 0 _aPhysics: coaching at home
260 _c2000
_apatna
_bbharti bhawan
300 _a497
650 _aphysics
942 _cBK
999 _c6498
_d6498