

Shelton, David C.; Prouty, Dick; Rold, John W. (director); Colorado Land Use Commission (assistance from)


Mack, R. L. (No.3.); Scibird, G. H. (No.3.); Warren, Edward R. (No.4.)

Clarke, John M.; Shufeldt, R. W.


Smithsonian Institute








Lye, William F.; Murray, Collin





Davis Jr., Donald G. (editor)

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