Circular.
- Publisher:
- Print ISSN:
- Electronic ISSN:
- OCLC Number: 6302629
- Subject: Engineering.
- Subject code: T
- Publication history: Began with Sept. 1929 issue.
Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | no.1 (1929); no.3-17 (1935-53); no.18-25 1955-59; v.18-25 1955-1959; no.26-28 1960-62; v.26-29 1960-1963; no.29-32 1963-64; v.30-36 1964-1967; no.34-36 1965-67; no.37-38 1967-69; v.37-40 1967-1970; no.40 (1970); no.42 1971; no.44-46 1972-73; no.45; no.48-50 1974-75; no.52 1976-77; no.53 1977-78; no.55 1979-80; no.56-61 1981-86; 1987/1988 | permanent |