Παραπομπή APA

(1956). Standard plans for highway bridge superstructures. Washington, D.C: U.S. Government Printing Office.

Παραπομπή Chicago Style

Standard Plans for Highway Bridge Superstructures. Washington, D.C: U.S. Government Printing Office, 1956.

Παραπομπή MLA

Standard Plans for Highway Bridge Superstructures. Washington, D.C: U.S. Government Printing Office, 1956.

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