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Tohutoro APA (7th ed.)
Head, K. H. (2006). Soil classification and compaction tests (3rd ed.). Whittles Pub. ; CRC Press.
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Tohutoru Kātū Chicago (17th ed.)
Head, K. H. Soil Classification and Compaction Tests. 3rd ed. Dunbeath, Scotland : Boca Raton, Fla.: Whittles Pub. ; CRC Press, 2006.
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Tohutoro MLA (9th ed.)
Head, K. H. Soil Classification and Compaction Tests. 3rd ed. Whittles Pub. ; CRC Press, 2006.
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