Program: HathiTrust Digital Library
- Publisher: Research and Development Laboratories, Portland Cement Association
- Print ISSN: 0097-6792
- Electronic ISSN:
- OCLC Number: 1963842
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
|
v.4-5 (1962-63); v.6-7 (1964-65); v.8-10 (1966-68)
|
committed to retain | 2009-08-03 | HTDL |
|