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Cita Chicago (17th ed.)Biennial Geotechnical Seminar Denver, Colo, American Society of Civil Engineers. Geo-Institute, American Society of Civil Engineers. Colorado Section. Geo-Institute Chapter, Association of Environmental & Engineering Geologists. Rocky Mountain Section, Colorado Association of Geotechnical Engineers, Inc ebrary, Christoph M. Goss, Jere A. Strickland, i Richard L. Wiltshire. GeoChallenges: Rising to the Geotechnical Challenges of Colorado : Proceedings of the 2012 Biennial Geotechnical Seminar, November 9, 2012, Denver, Colorado. Reston, Va.: American Society of Civil Engineers, 2013.
Cita MLA (9th ed.)Biennial Geotechnical Seminar Denver, Colo, et al. GeoChallenges: Rising to the Geotechnical Challenges of Colorado : Proceedings of the 2012 Biennial Geotechnical Seminar, November 9, 2012, Denver, Colorado. American Society of Civil Engineers, 2013.