(1980). Contruction Principles, Materials And Methods/ Harold B. Olin, John L. Schmidt And Walter H. Lewis. The institute of financial education.
Lua i Stíl Chicago (17ú heag.)Contruction Principles, Materials And Methods/ Harold B. Olin, John L. Schmidt And Walter H. Lewis. The institute of financial education, 1980.
Lua MLA (8ú heag.)Contruction Principles, Materials And Methods/ Harold B. Olin, John L. Schmidt And Walter H. Lewis. The institute of financial education, 1980.
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