Nichols, T. C. (1968). Engineering geology of the Paducah East quadrangle in Kentucky: A field and laboratory study of engineering behavior of earth materials in an urban area. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationNichols, Thomas C. Engineering Geology of the Paducah East Quadrangle in Kentucky: A Field and Laboratory Study of Engineering Behavior of Earth Materials in an Urban Area. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1968.
MLA (9th ed.) CitationNichols, Thomas C. Engineering Geology of the Paducah East Quadrangle in Kentucky: A Field and Laboratory Study of Engineering Behavior of Earth Materials in an Urban Area. United States Department of the Interior, Geological Survey, 1968.