Program: HathiTrust Digital Library
- Publisher: Published by permission of the Director, U.S. Geological Survey
- Print ISSN: 0076-4779
- Electronic ISSN:
- OCLC Number: 2253643
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.30; v.31-32; v.35-36; v.38; v.10(1952); v.11(1953); v.1(1944); v.2(1948); v.4(1952); v.7(1950); v.8(1951); v.9(1950)
|
committed to retain | 2020-03-12 | HTDL |
|