

Slack, R.; Nineham, A. W.

Geological & Natural History Survey Of Minnesota; Papers By Sheldon, Edmund P.; Tilden, Josephine E.; Anderson, Alex. P.

Geological & Natural History Survey Of Minnesota; Paper By Tilden, Josephine E.

Geological & Natural History Survey Of Minnesota; Papers By Tilden, Josephine E.; Underwood, Lucien M.; Macdougal, D. T.

Geological & Natural History Survey Of Minnesota; Macmillan, Conway, Editor

Dominian, Leon; Smithsonian Institution

Kezer, Alvin; Robertson, D. W.; Coffman, F. A.; Koonce, Dwight; Deming, G. W.

McGinty, R. A.; Colorado Experiment Station Horticultural Division

Sackett, Walter G.; Colorado Agricultural Experiment Station

Headden, William P.; Colorado Agricultural Experiment Station

Benedict, C. Harry; U. S. Department Of Commerce, Bureau Of Mines

Munro, A. C.; Pearse, H. A.; U. S. Department Of Commerce, Bureau Of Mines

Fuller, Myron L.; Department Of The Interior, U. S. Geological Survey

Taff, Joseph A.; Department Of The Interior, U. S. Geological Survey

Hayes, Charles Willard; Department Of The Interior, U. S. Geological Survey


Public Service Commission Of Oregon

Mills, George; Grove, Richard; Colorado Springs Fine Arts Center, Taylor Museum

Riesenberg, Saul H.; Shigeru Kaneshiro



Vincent, Eugene; Translated By Dulles, Charles W.




Ingall, Elfric Drew; Brumell, H. P. H.; Geological Survey Of Canada
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