Schofield, W. (1993). Engineering surveying: Theory and examination problems for students (4th ed.). Oxford: Laxton's.
Παραπομπή Chicago StyleSchofield, Wilfred. Engineering Surveying: Theory and Examination Problems for Students. 4th ed. Oxford: Laxton's, 1993.
Παραπομπή MLASchofield, Wilfred. Engineering Surveying: Theory and Examination Problems for Students. 4th ed. Oxford: Laxton's, 1993.
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