Bibliographic Details
| Main Author: |
Plein, Leopold Nicholas, 1897- |
|---|
| Corporate Authors: |
National Research Project on Reemployment Opportunities and Recent Changes in Industrial Techniques (U.S.),
United States. Bureau of Mines |
|---|
| Other Authors: |
Berquist, F. E. (Frederick E.),
Tryon, F. G. (Frederick Gale), 1892-1940 |
|---|
| Format: | Government Document
Book
|
|---|
| Language: | English |
|---|
| Published: |
Philadelphia, Pa. :
Works Progress Administration, National Research Project and Dept. of the Interior, Bureau of Mines,
[1937]
|
|---|
| Series: | Mineral technology and output per man studies ;
report no. E-3.
|
|---|
| Subjects: | |
|---|