- Publication Title:
- Approved dust respirators for coal mines; by Robert H. Schutz.
- Display Title:
- Information circulars. 8509. Approved dust respirators for coal mines; by Robert H. Schutz.
- Series Title:
- Information circulars.
- Corporate Agency Authors:
- Mines Bureau and Interior Dept.
- Sort Author:
- Mines Bureau
- Authors:
- Schutz, Robert H.
- Author place:
- Washington, DC
- Author zip:
- 20240
- Date:
- [May 1971.]
- Publish Date ISO Format:
- 1971-05-01T00:00:00Z
- Publication Start:
- 19710501
- Publication End:
- 19710531
- Corporate/Agency Author:
- Mines Bureau
- Publication month:
- 8
- Publication year:
- 1971
- SuDoc number:
- I 28.27:(nos.)
- Description:
- [3]+7 p. 4°
- Notes:
- • Sent to Depository Libraries. Item 637-A
- Availability:
- † Distribution Made by Issuing Office. Mines Bureau, Pittsburgh, PA 15213 and • Sent to Depository Libraries. Item 637-A
- GPO Item number:
- 637-A
- Monthly Catalog date:
- July 1971
- Monthly Catalog issue number:
- 918
- Monthly Catalog page number:
- 1
- Monthly Catalog issue date:
- 1971-07-01T00:00:00Z
- Monthly Catalog entry number:
- 11416
- Record start page number:
- 74