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- Ascherson, Paul Friedrich August & Graebner, Karl Otto Robert Peter Paul6
- Fiori, Adriano & Paoletti, Giulio3
- Loiseleur-Deslongchamps, Jean-Louis-Auguste3
- Schinz, Hans & Keller, Robert3
- Arcangeli, Giovanni2
- Futák, Ján (ed.)2
- Hooker, Joseph Dalton2
- Reichenbach, Heinrich Gottlieb Ludwig2
- Velenovský, Josef2
- Ascherson, Paul Friedrich August1
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