Program: HathiTrust Digital Library
- Publisher: [Contractor Pub. Co.]
- Print ISSN: 0040-6619
- Electronic ISSN: 0040-6619
- OCLC Number: 3943758
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1931-1946 (May/June); 1946 (July/Aug.)-1952; 1953-1958; 1959-1964; 1965-1970; 1971-1975; 1985-1989; 1990-1992
|
committed to retain | 2010-07-07 | HTDL |
|