Thesis (Ph. D.)--Columbia University, 1915. / Vita. Published also as Bulletin of the U.S. Bureau of Labor Statistics, whole no. 146, 1914.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/227403757 |
| Date | January 1915 |
| Creators | Stone, Nahum Isaac, Portnoy, Lawrence, |
| Publisher | New York, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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