Das, Braja M. Principles of geotechnical engineering / Braja M. Das and Khaled Sobhan. - 9th ed. - Australia : Cengage Learning, c2018. - xxiii, 819 p. : ill. ; 23 Cm Includes bibliographical references and index. ISBN: 9781305970939 (hbk.) Subjects--Topical Terms: Geotechnical engineering.Soil mechanics. Dewey Class. No.: 624.15136 / DAS