Jacobson, R. J. (1987). Stratigraphic correlations of the Seelyville, Dekoven, and Davis coals of Illinois, Indiana, and western Kentucky. Dept. of Energy and Natural Resources, Illinois State Geological Survey.
Chicago Style (17th ed.) CitationJacobson, R. J. Stratigraphic Correlations of the Seelyville, Dekoven, and Davis Coals of Illinois, Indiana, and Western Kentucky. [Champaign, Ill.]: Dept. of Energy and Natural Resources, Illinois State Geological Survey, 1987.
MLA (9th ed.) CitationJacobson, R. J. Stratigraphic Correlations of the Seelyville, Dekoven, and Davis Coals of Illinois, Indiana, and Western Kentucky. Dept. of Energy and Natural Resources, Illinois State Geological Survey, 1987.
Warning: These citations may not always be 100% accurate.