Our natural resources
Subtitle: their continuing discovery and human progress
By: by Morris M. Leighton
Contributors: Ohio. Division of Geological Survey
Series: Information circular -- no. 12; Information circular (Ohio. Division of Geological Survey) -- no. 12.
Publisher: State of Ohio, Department of Natural Resources, Division of Geological Survey
Published: 1953
Place of publication: Columbus
Language: eng
Number of pages: 16
Subjects: Geology; History; Natural resources