File talk:The British desmidieae (IA britishdesmidiea1848ralf).pdf
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Author lifetime
[edit]Latest publication Penn has for the author is 1861. https://onlinebooks.library.upenn.edu/webbin/book/search?author=John+Ralfs&amode=words&title=&tmode=words&c=x ShakespeareFan00 (talk) 22:29, 21 December 2020 (UTC)