Ball, John undated [invitation]
Ball, John, 1818-1889
Article
1905
Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie
36
1--1
BioStor Harvard University Botany Libraries
Stuttgart [etc.] Schweizerbart [etc.]
BioStor: https://biostor.org/reference/229612
Public domain. The BHL considers that this work is no longer under copyright protection.
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