000 00312nam a2200121Ia 4500
008 221001s2010 xx 000 0 eng d
082 _a915.4 RAO (H)
100 _aRao, B. P.
245 0 _aSansadhan aur paryavaran
260 _aGorakhpur
_bVasundhara Prakashan
_c2010
300 _aviii, 490p.
942 _2ddc
_cBK
999 _c36170
_d36170