000 00260nam a22001217a 4500
003 OSt
100 _aSingh, R N
245 _aAadhunik Samajik Manovigyan
250 _a7th ed.
260 _aAgra
_bAgarwal Publication
_c2015
300 _a491p.
942 _2ddc
_cBK
999 _c4520
_d4520