000 00355nam a2200157Ia 4500
020 _a9789699705236
040 _cPK-LaCSN
082 _a500
_bREH
100 _a"Rehan, Sajida"
245 0 _aOur world of science:
260 _c2015
_bFidem
_aKarachi
300 _a138
942 _cTB
999 _c835443
_d835420