Thesis--Columbia University. / Vita printed inside back cover. "This dissertation is identical with a Conference Board Report published under the same title in July 1948." Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/644982779 |
| Date | January 1900 |
| Creators | Ellis, Paul Warren, |
| Publisher | New York : National Industrial Conference Board, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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