Roark, R. J. (1965). Formulas for stress and strain (4th ed.). New York: McGraw-Hill Book Company.
Παραπομπή Chicago StyleRoark, Raymond J. Formulas for Stress and Strain. 4th ed. New York: McGraw-Hill Book Company, 1965.
Παραπομπή MLARoark, Raymond J. Formulas for Stress and Strain. 4th ed. New York: McGraw-Hill Book Company, 1965.
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