1967. This georeferenced raster layer represents locations of energy sources in China in 1967. It is taken from the book, Communist China: Map Folio, whi... Directorate of Intelligence, Office of Basic and Geographic Intelligence.
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1948. Alkire, Robert L. 1910-. Includes index to oil and gas fields. Includes: Generalized section of rocks of Ohio. Scale [1:380,160] compiled by Robert L. Alkire ; drafting by ... Ohio. Division of Geological Survey.
1960. Shearrow, George G. Scale [1:380,160] revised by ... George G. Shearrow and Theodore DeBrosse ; drafting by Harold J. Flint and Fletcher W. Twitty. Includes table of "... Ohio. Division of Geological Survey.