Thesis (Ph. D.)--John Hopkins University, 1928. / Vita. "Reprinted from Journal of agricultural research, vol. 42, no. 7, Apr. 1, 1931." "Literature cited": p. 417-419.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/608946998 |
| Date | January 1900 |
| Creators | Bertholf, Lloyd Millard, |
| Publisher | [Washington, D.C., |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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