Author
United States. Bureau of Mines
Sanford, Robert S.
4 results
Wright, Wilford S.
3 results
Heide, Harold E.
2 results
Holt, S. P.
2 results
Rutledge, F. A. (Franklin A.)
2 results
Boley, Charles C.
1 results
Erickson, Aner W.
1 results
Holt, Stephen P.
1 results
Jolley, T. R. (Theodore R.)
1 results
Moss, Joel M.
1 results
Muir, Neal M.
1 results
Rutledge, Franklin A.
1 results
Thomas, Bruce I.
1 results
Thorne, Robert L.
1 results
Toenges, Albert L. (Albert Louis), 1889-
1 results
Tolonen, A. W.
1 results
Traver, W. M.
1 results
Warfield, R. S.
1 results
Webber, B. S.
1 results
Wells, R. R.
1 results