000 00351nam a2200157Ia 4500
008 131111s9999 xx 000 0 und d
100 _aRavikumar,S K
245 _aTeaching of biology
260 _aJaipur
260 _bMangaldeep
260 _c2003
300 _a280p.
650 _aEducation
_aTeaching-biology
763 _a25149
942 0 0 _01
999 _c35884
_d35884