Whitlatch, E. E. (1997). Civil and environmental systems engineering. New Jersey: Prentice-Hall.
Παραπομπή Chicago StyleWhitlatch, E. Earl. Civil and Environmental Systems Engineering. New Jersey: Prentice-Hall, 1997.
Παραπομπή MLAWhitlatch, E. Earl. Civil and Environmental Systems Engineering. New Jersey: Prentice-Hall, 1997.
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