000 00355nam a2200133Ia 4500
008 241226s9999 xx 000 0 und d
020 _a0
082 _a500
_bBHA
100 _aBhatnagar, A B.
245 0 _aTeaching of Science
260 _aMeerut :
_bR Lall Book Depot ,
_c201011.
300 _a491 Pages;
650 _aNatural sciences & mathematics
999 _c178117
_d178117