International directory of sources.
- Publisher: United Nations Environment Programme
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 9653324
- Subject: Ecology Directories.
- Subject code: QH
- Publication history:
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 7th ed.:v.B (1992); 7th ed.:v.A (1992); 7th ed.:v.A-B:index (1992) | permanent |