Wolf, P. R., & Brinker, R. C. (1994). Elementary surveying (9th ed.). New York: Harper Collins College Publishers.
Παραπομπή Chicago StyleWolf, Paul R., and Russell C. Brinker. Elementary Surveying. 9th ed. New York: Harper Collins College Publishers, 1994.
Παραπομπή MLAWolf, Paul R., and Russell C. Brinker. Elementary Surveying. 9th ed. New York: Harper Collins College Publishers, 1994.
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