000 00252nam a2200121Ia 4500
008 230401s2011 xx 000 0 eng d
082 _a526.9
100 _aDUGGAL S K
245 0 _asurveying
260 _bTMH
_c2011
300 _a612
942 _2ddc
_cBTECH
999 _c441
_d441