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Lua i Stíl Chicago (17ú heag.)Perenchio, W. F., J. Fraczek, agus D. W. Pfeifer. Corrosion Protection of Prestressing Systems in Concrete Bridges. Washington, D.C: Transportation Research Board, National Research Council, 1989.
Lua MLA (9ú heag.)Perenchio, W. F., et al. Corrosion Protection of Prestressing Systems in Concrete Bridges. Transportation Research Board, National Research Council, 1989.
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