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    Assallay, A. M., Rogers, C. D. F., Smalley, I. J., & Jefferson, I. F. 1998. Silt: 2–62 μm, 9–4φ. Earth-Science Reviews 45(1): 61-88.

    Bruce Wilkinson, Geology Professor, Syracuse University (personal communication)

    Krinsley, D. H., & Smalley, I. J. 1972. Sand: The study of quartz sand in sediments provides much information about ancient geological environments. American Scientist 60(3): 286-291.

    Sand from Gobi Desert Photo by: Siim Sepp

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    Sand Mining,_p%C3%ADskovcov%C3%BD_lom_II.jpg by: Aktron / Wikimedia Commons

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