000 00309nam a2200133Ia 4500
100 _aPeriodical
942 _cBK
245 _aVigyan Shikshaki;Vol.12
260 _aNew Delhi
_bAll India SC.Teachers Association
_c1968
082 _a375.5
_bV.S
300 _a54,42,34,38
546 _aEnglish
999 _c332069
_d332069
041 _amar