000 00276nam a22001217a 4500
003 OSt
082 _a375.008 3 TYA
100 _aTyagi, S D
245 _aParyavaran Addhyan ka Shikshan Shastra
260 _aAgra
_bAgarwal Publication
_c2014
300 _a182p.
942 _2ddc
_cBK
999 _c4324
_d4324