American Society of Civil Engineers. Dept. of Professional Activities. (1971). Engineering Issues. American Society of Civil Engineers.
Chicago-referens (17:e uppl.)American Society of Civil Engineers. Dept. of Professional Activities. Engineering Issues. New York: American Society of Civil Engineers, 1971.
MLA-referens (8:e uppl.)American Society of Civil Engineers. Dept. of Professional Activities. Engineering Issues. American Society of Civil Engineers, 1971.
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