000 00343nam a2200145Ia 4500
005 20260205102624.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a500 B858N
100 _aBudbari,David O.
245 0 _aNaveen vigyan(H )
260 _aDelhi
_bAtma Ram & Sons
_c1990
300 _a340p.
690 _aScience
942 _cBK
999 _c249105
_d249105