Program: HathiTrust Digital Library
- Publisher: Traffic Institute, Northwestern University
- Print ISSN: 0041-0667
- Electronic ISSN:
- OCLC Number: 1767680
- Validation: None
- Retention: permanent
- Institution: HathiTrust
- Facility:
- OCLC Symbol: HATHI
- Holdings Format: Print
| Materials | Archive Action | Date of Action | Program | Status/Note |
|---|---|---|---|---|
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1953 (v.1); v.1-2 1953-1954; 1954 (v.2); 1955 (v.3); v.3-4 1955-1956; 1956 (v.4); 1957 (v.5); v.5-6 1957-1958; 1959 (v.7); v.7-8 1959-1960; 1961 (v.9); v.9:no.1 1961; v.9:no.3-8 1961; v.9:no.10-11 1961; v.9-10 1961-1962; 1962 (v.10); v.10:no.2-3 1962; v.10:no.5-12 1962; 1963 (v.11); v.11-12 1963-1964; v.13-14 1965-1966; v.15-16 1967-1968; v.17 1969; v.18 1970; v.19-20 1971-1972
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committed to retain | 2022-01-18 | HTDL |
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