Author
United States. Bureau of Mines
5
Symons, Henry H. 1894-1975
4
United States. Bureau of Labor Statistics,
4
Branner, George C. 1890-1967
3
Geological Survey (U.S.)
3
Infobase,
3
United States. Bureau of Labor Statistics
3
California. Division of Mines and Geology
2
Ebooks Corporation
2
Key, Wallace W.
2
Oxford Scholarship Online
2
SpringerLink (Online service)
2
TMW Media Group,
2
Tolles, N. Arnold,
2
United States. Bureau of the Census
2
Berlin, Leslie, 1969-
1
Burr, Gregory A.,
1
California Agricultural Statistics Service
1
California. Department of Food and Agriculture,
1
California. Division of Mines
1
Cecora, Reno J.
1
Chang, Emily,
1
Colorado Agricultural College. Extension Service
1
Cook, Katy,
1
Dardis, Tom
1
Davis, Ronald L.
1
De Perio, Marie A.,
1
Dietrich, W. F. 1892-1980
1
Diller, J. S. 1850-1928
1
Dolbear, Samuel Hood, 1886-1972
1
Faulkner, Robert R.
1
Fillip, N. M.
1
Films for the Humanities & Sciences (Firm)
1
Fitzgerald, F. Scott 1896-1940,
1
Frank, Matthew Gavin
1
Fritz, Ben,
1
Graham, Sheilah
1
Hagelman, Ronald R., III
1
Hallett, Hilary A., 1968-
1
Hanson, Dirk
1
Harris, Mark, 1963-
1
Health Hazard Evaluation Program (U.S.),
1
Hecht, Peter, 1956-
1
Hofmann, Kay H.
1
Hudson, Travis
1
Infobase
1
Johnson, A. C.
1
Kaplan, David A., 1956-
1
Kraftile Company
1
Lasky, Jesse L., Jr., 1910-1988
1
more ...