Petrak, Franz
From Library of Congress Name Authority File
Petrak, Franz
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Additional Information
Sources
- found: Author's Der formenkreis des Cirsium eriophorum (L.), 1912.
- found: Samuels, G. J. An annotated index to the mycological writings of Franz Petrak, 1981- : v. 1, t.p. (Franz Petrak) v. 1, p. 4 (1886-1973)
Change Notes
- 1982-06-08: new
- 2009-01-07: revised
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