Program: HathiTrust Digital Library
- Publisher: Engelhard Minerals & Chemicals Corp
- Print ISSN: 0013-7642
- Electronic ISSN:
- OCLC Number: 1567890
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.1-5 1960-1965; v.6-9 1965-69; v.10-11 1969-1970
|
committed to retain | 2011-03-20 | HTDL |
|