Davis, R. E. (1981). Surveying: Theory and practice (6th ed.). New York: McGraw-Hill.
Παραπομπή Chicago StyleDavis, Raymond Earl. Surveying: Theory and Practice. 6th ed. New York: McGraw-Hill, 1981.
Παραπομπή MLADavis, Raymond Earl. Surveying: Theory and Practice. 6th ed. New York: McGraw-Hill, 1981.
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