000 00303nam a2200133Ia 4500
005 20260205095751.0
008 260111s9999||||xx |||||||||||||| ||und||
082 _a500 Sc26
245 0 _aScience for all
260 _aDelhi
_bPustak mahal
_c1991
300 _a80p.
690 _aScience
942 _cBK
999 _c219310
_d219310