000 00259nam a22001217a 4500
003 SGT
082 _bSIN
100 _aSINGH, HARPAL
245 _aUNDERSTANDING DISCIPLINES AND SUBJECTS
260 _aDELHI
_bEDU PUB
_c2016
300 _a166
942 _2ddc
_cBK
999 _c19877
_d19877