Betty, John G. (John Galtress), 1922-, author
Engineering contracts : a practical guide
McGraw-Hill, 1993
 Buku Teks
Ayers, Chesley, author
Specifications for architecture, engineering and construction
McGraw-Hill, 1984
 Buku Teks
Marks, R. J. (Raymond John)
Aspects of civil engineering contract procedure
Pergamon Press, 1985
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Ayers, Chesley, author
Specifications for architecture, engineering and construction
McGraw-Hill, 1984
 Buku Teks
Ayers, Chesley, author
Specifications: for architecture, engineering, and construction
McGraw-Hill , 1975
 Buku Teks
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