000 00266nam a22001217a 4500
003 OSt
100 _aSingh, Ram Pal
245 _aNaveen Vywaharik Manovigyan
250 _a 7th ed.
260 _aAgra
_bAgarwal Publication
_c2014
300 _a422p.
942 _2ddc
_cBK
999 _c4514
_d4514