Program: HathiTrust Digital Library
- Publisher: Professional and Industrial Pub. Co.
- Print ISSN: 0366-9238
- Electronic ISSN:
- OCLC Number: 175308618
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.1 (1920); v.2 (1921); v.3 (1922); v.4 (1923)
|
committed to retain | 2019-01-01 | HTDL |
|