Das, B. M. (2014). Principles of geotechnical engineering 8th Ed. Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Das, Braja M. Principles of Geotechnical Engineering 8th Ed. Cengage Learning, 2014.
Lua MLA (8ú heag.)Das, Braja M. Principles of Geotechnical Engineering 8th Ed. Cengage Learning, 2014.
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