[Proceedings].
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- OCLC Number: 1771705
- Subject: Population Congresses.
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Print Holdings
| Archiving Institution | Program | Holdings Description | Retention |
|---|---|---|---|
| HathiTrust (HATHI) | HTDL | 1st 1931 v.1; 1st 1931 v.2; 1st 1931 v.3; 1st 1931 v.4; 1st 1931 v.5; 1st 1931 v.6; 1st 1931 v.7; 1st 1931 v.8; 1st 1931 v.9; 1st 1931 v.10 | permanent |