000 00254nam a2200097Ia 4500
008 170101s2017 xx 000 0 und d
100 _aR. Agor
245 2 _aA Textbook of Surveying and Levelling
260 _aDelhi
_bKhanna Publishers
942 _2ddc
_cK
999 _c1753966
_d1753966