Author
Geological Survey (U.S.)
71
Gerlach, Arch C.
71
Overstreet, William B.
71
Pecora, William T.
71
U.S. Census Bureau
49
Canada. Department of Mines and Technical Surveys
23
Comtois, Paul
23
Nicholson, N. L. (Norman Leon)
23
United States. Department of Agriculture. Statistical Reporting Service
5
Marchant, W.
4
Playfair, William, 1759-1823
4
United States. Federal Power Commission
4
United States. Department of Agriculture
3
Gorkin, Aleksandr Fedorovich
2
Kutafʹev, S. A.
2
Rand McNally and Company
2
United States. Bureau of Commercial Fisheries
2
United States. Bureau of Mines
2
United States. Bureau of Public Roads
2
American Petroleum Institute
1
Anderson, James R.
1
Bartholomew, J. G.
1
Bayer, Herbert
1
Broadcasting Publications, Inc
1
Canada. Dept. of Agriculture
1
Container Corporation of America
1
Du Val, Pierre, 1619-1683
1
French, Alice, E.
1
Great Britian. Privy Council. Judicial Committee
1
Instituto Geografico di Agostini
1
Marschner, F. J. (Francis Joseph), 1882-1966
1
Musnitskii, M.
1
Shaw, W. James II
1
U.S. Atomic Energy Commission
1
United States. Army
1
United States. Conservation Needs Inventory Committee
1
United States. Department of Agriculture. Economic Research Service
1
United States. Farmers Home Administration
1
United States. Federal Aviation Administration
1
United States. Forest Service
1
United States. Soil Conservation Service
1
Weeks, Robert A.
1