Program: HathiTrust Digital Library
- Publisher: Instruments Publishing Company
- Print ISSN: 0096-2066
- Electronic ISSN:
- OCLC Number: 2050400
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.5-6 1932-33; v.7-8 1934-35; v.9-10 1936-37
|
committed to retain | 2022-07-25 | HTDL |
|