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BEER, Ferdinand Pierre, E. Russell Johnston, Jr, John T. Dewolf. (2006). Mechanics of materials (4th ed.). New York: The McGraw-Hill Companies.

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BEER, Ferdinand Pierre, E. Russell Johnston, Jr, John T. Dewolf. Mechanics of materials. 4th ed. New York: The McGraw-Hill Companies, 2006. Text.

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BEER, Ferdinand Pierre, E. Russell Johnston, Jr, John T. Dewolf. Mechanics of materials. 4th ed. New York: The McGraw-Hill Companies, 2006. Text.

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BEER, Ferdinand Pierre, E. Russell Johnston, Jr, John T. Dewolf. Mechanics of materials. 4th ed. New York: The McGraw-Hill Companies, 2006. Print.