Title page of: <i>Album des orchidées de l'Europe centrale et septentrionale</i> by: Henry Correvon (1854-1939), Genève, (1899)
Correvon, Henry
1899
<a rel="nofollow" class="external free" href="https://www.biodiversitylibrary.org/page/15446278">https://www.biodiversitylibrary.org/page/15446278</a>