Program: HathiTrust Digital Library
- Publisher: National Research Council of the National Academy of Sciences
- Print ISSN: 0073-7623
- Electronic ISSN:
- OCLC Number: 3681629
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
1st 1920; 3d 1927; 4th 1931; 1933; 6th 1938; 7th 1940; 8th ed. 1946; 9th ed. 1950; 10th ed. 1956
|
committed to retain | 2020-08-18 | HTDL |
|