Legget, R. F., & Hatheway, A. W. (1988). Geology and Engineering. New York: McGraw-Hill.
Παραπομπή Chicago StyleLegget, Robert F., και Allen W. Hatheway. Geology and Engineering. New York: McGraw-Hill, 1988.
Παραπομπή MLALegget, Robert F., και Allen W. Hatheway. Geology and Engineering. New York: McGraw-Hill, 1988.
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