Das, B. M. (1998). Principles of geotechnical engineering (4th ed.). Boston, MA: PWS.
Trích dẫn kiểu ChicagoDas, Braja M. Principles of Geotechnical Engineering. 4th ed. Boston, MA: PWS, 1998.
MLA CitationDas, Braja M. Principles of Geotechnical Engineering. 4th ed. Boston, MA: PWS, 1998.
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