000 00307 a2200121 4500
082 _a507.6
_bOBJ
090 _c5932
_d8023
245 _aObjective general science
260 _aNew Delhi
_bSudha publications
_c19
_g19
300 _a[ii], 312p.
_c19cm.
650 _aNATURAL SCIENCES AND MATHEMATICS
942 _cL
999 _c34739
_d34739