Das, B. M. (2021). Principles of geotechnical engineering (Tenth edition, SI edition.). Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Das, Braja M. Principles of Geotechnical Engineering. Tenth edition, SI edition. Boston: Cengage Learning, 2021.
Lua MLA (9ú heag.)Das, Braja M. Principles of Geotechnical Engineering. Tenth edition, SI edition. Cengage Learning, 2021.
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