000 00284nam a2200121Ia 4500
008 230125s9999 xx 000 0 und d
100 _aSingh, B.D.
_96226
245 0 _aSchool Organisation
250 _a4th
260 _bAgra: Agrawal pub.
_c2013-14
300 _a176
942 _cBK
999 _c115821
_d115821