COWAN, H. J., & COWAN, H. J. (1980). Architecture Structures An Introduction To Structurel Mechanics. Pitman publishing Limited.
Lua i Stíl Chicago (17ú heag.)COWAN, Henry J., agus Henry J. COWAN. Architecture Structures An Introduction To Structurel Mechanics. Pitman publishing Limited, 1980.
Lua MLA (8ú heag.)COWAN, Henry J., agus Henry J. COWAN. Architecture Structures An Introduction To Structurel Mechanics. Pitman publishing Limited, 1980.
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