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Lua i Stíl Chicago (17ú heag.)National Public Works Conference. Sub-Committee on Cost Analysis of Engineering Services. Cost Planning of Mechanical and Electrical Engineering Services for Building Projects. 2nd ed. [Melbourne]: N.P.W.C. Sub-Committee on Cost Analysis of Engineering Services, 1974.
Lua MLA (8ú heag.)National Public Works Conference. Sub-Committee on Cost Analysis of Engineering Services. Cost Planning of Mechanical and Electrical Engineering Services for Building Projects. 2nd ed. N.P.W.C. Sub-Committee on Cost Analysis of Engineering Services, 1974.