Thesis (Ph. D.)--University of Michigan, 1917. / "Reprinted from the American journal of botany, 5: 1-31, January, 1918." "Publication no. 167 from the Botanical department of the University of Michigan." "Literature cited": p. 30-31.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/297267732 |
| Date | January 1918 |
| Creators | Ludwig, Clinton Albert, |
| Publisher | Lancaster, Pa., Press of the New Era Print. Co., |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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