The U.G.I. circle.
- Publisher: United Gas Improvement Co.
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 51741934
- Subject: Gas companies Pennsylvania Philadelphia Periodicals.
- Subject code:
- Publication history: Vol. 1, no. 1 (July 1920)-
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | v.5-6 (1924:July-1926:June) | permanent |
| Linda Hall Library of Science, Engineering & Technology (LHL) | Linda Hall Library of Science, Engineering & Technology | v.12:no.12 (Jun 1932) |