000 00288nam a2200121Ia 4500
008 220201s1984 xx 000 0 eng d
082 _a526.9
_bAGO
100 _aAgor,R
245 0 _aText book of surveying& levelling.
260 _bKhanna publisher
_c1984
300 _a944
942 _2ddc
999 _c83256
_d83256