Geology and mineral resources of the Dixon quadrangle,
by Russell Stafford Knappen.
Illinois State Geological Survey Bulletin No. 49
APA Citation
Knappen, R. Stafford., Illinois State Geological Survey. (1926). Geology and mineral resources of the Dixon quadrangle. Urbana, Ill: [Schnepp & Barnes, printers, Springfield].
MLA Citation
Knappen, Russell Stafford, 1892-1982, and Illinois State Geological Survey. Geology And Mineral Resources of the Dixon Quadrangle. Urbana, Ill: [Schnepp & Barnes, printers, Springfield], 1926.
Warning: These citations may not always be complete (especially for serials).