The U.S. Geological Survey in the early 1900s reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins.

by Hewett, D. F. (Donnel Foster), 1881-1971
[Menlo Park, Calif.] : Denver, CO : The Survey ; For sale by the USGS Information Services, 1998

The U.S. Geological Survey in the early 1900s reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins /

by Hewett, D. F. (Donnel Foster), 1881-1971
[Menlo Park, Calif.] : U.S. Dept. of the Interior, U.S. Geological Survey, 1998