National Research Council (U.S.). Highway Research Board. (1973). Soil classification: 7 reports prepared for the 52nd annual meeting. National Academy of Science - National Research Council.
Citace podle Chicago (17th ed.)National Research Council (U.S.). Highway Research Board. Soil Classification: 7 Reports Prepared for the 52nd Annual Meeting. Washington, D.C: National Academy of Science - National Research Council, 1973.
Citace podle MLA (9th ed.)National Research Council (U.S.). Highway Research Board. Soil Classification: 7 Reports Prepared for the 52nd Annual Meeting. National Academy of Science - National Research Council, 1973.
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