REFERENCES
Report National Conservation Commission.
Reports of Geological Survey.
Conservation of Ores and Related Minerals. (Carnegie.) Report Governor's Conference.
Conservation of Mineral Resources. (U. S. Government Report.)
Industrial Alcohol and Its Uses. W. H. Wiley. Bulletin, 269.
Production of Peat in the U. S. in 1908. U. S. Government Reports.
Production of Oil in the U. S. in 1908.
Production of Gas in the U. S. in 1908.
Waste of Our Fuel Resources. (White.) Report Governor's Conference.