000 00326nam a22001457a 4500
003 OSt
020 _a9788190711074
080 _b333.72 Sh 23 P
100 _aT. C. Sharma
245 _aParyavaran shikshan
260 _aNew Delhi
_bRajat Prakashan
_c2008
300 _axii, 465p.; 22cms
901 _a42948
942 _2ddc
_cHB
999 _c40211
_d40211