Published also as thesis (Ph.D.)--Johns Hopkins University, 1929. / Digitization funded by NEH digital to microfilm conversion project. Title selected from the series Literature of the agricultural sciences for the Core historical literature of agriculture, Agricultural economics and rural sociology. Also available in print and in microfilm.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/62104766 |
| Date | January 1930 |
| Creators | Lampen, Dorothy, |
| Publisher | Baltimore : The Johns Hopkins Press, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
| Source | Connect to full text |
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