Umbral 2000 [i.e. dos mil].
- Publisher: Dirección de Enseñanza Superior
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 1789957
- Subject: Library science Periodicals.
- Subject code: Z
- Publication history: año 1- enero/jul. 1972-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | v.1:1; v.1 no.1 1972 | permanent |