000 00374nam a2200133Ia 4500
008 241226s9999 xx 000 0 und d
020 _a8174501851
082 _a570
_bSIN
100 _aSingh, B. D.
245 0 _aBiology (Class XII)
260 _aNew Delhi :
_bNational Council of Educational Research and Trainin ,
_c2003.
300 _a409 Pages;
650 _aBiology
999 _c174141
_d174141