Trends in output per man-hour in mining.
- Publisher:
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 10509622
- Subject: Labor productivity United States.
- Subject code: H
- Publication history: 1935/49-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1935/1949 | permanent |