Davis, T. (2008). Geotechnical testing, observation, and documentation (2nd ed.). American Society of Civil Engineers.
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Chicago-čujuhus (17. p.)
Davis, Tim. Geotechnical Testing, Observation, and Documentation. 2nd ed. Reston, VA: American Society of Civil Engineers, 2008.
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MLA-čujuhus (9. p.)
Davis, Tim. Geotechnical Testing, Observation, and Documentation. 2nd ed. American Society of Civil Engineers, 2008.
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