000 00261nam a2200109Ia 4500
008 240421s9999 xx 000 0 und d
100 _aSingh, D.K.
245 0 _aSchool Aspects Of Education
260 _aNew Delhi
_bA.P.H.
_c2011
300 _a202p.
942 _cBK
999 _c15707
_d15707