(1974). Proceedings of the American Congress on Surveying and Mapping, 34th Annual Meeting, St. Louis, MO., March 10-15, 1974. Washington, D.C: American Congress on Surveying and Mapping.
Παραπομπή Chicago StyleProceedings of the American Congress On Surveying and Mapping, 34th Annual Meeting, St. Louis, MO., March 10-15, 1974. Washington, D.C: American Congress on Surveying and Mapping, 1974.
Παραπομπή MLAProceedings of the American Congress On Surveying and Mapping, 34th Annual Meeting, St. Louis, MO., March 10-15, 1974. Washington, D.C: American Congress on Surveying and Mapping, 1974.
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