Day, R. W. (1999). Geotechnical and foundation engineeringdesign and construction. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Day, Robert W. Geotechnical and Foundation Engineeringdesign and Construction. McGraw-Hill, 1999.
Lua MLA (8ú heag.)Day, Robert W. Geotechnical and Foundation Engineeringdesign and Construction. McGraw-Hill, 1999.
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