Mead, D. W. (1916). Contracts, specifications and engineering relations. McGraw HIll book co..
Lua i Stíl Chicago (17ú heag.)Mead, Daniel W. Contracts, Specifications and Engineering Relations. New York: McGraw HIll book co., 1916.
Lua MLA (8ú heag.)Mead, Daniel W. Contracts, Specifications and Engineering Relations. McGraw HIll book co., 1916.
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