000 00285nam a2200121Ia 4500
008 220201s1986 xx 000 0 eng d
082 _a526.9
_bAGO
100 _aAgor,R
245 0 _aText book of advanced surveying
260 _bKhanna publisher
_c1986
300 _a645
942 _2ddc
999 _c83756
_d83756