Umbral.
- Publisher: Centro de InvestigacioĢn y Desarrollo de la EducacioĢn
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 232578100
- Subject: Politics and government. fast (OCoLC)fst01919741
- Subject code: F
- Publication history:
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | N.EPOCA no.3 1980 | permanent |