Johan Jonson Havaas (1864 - 1956) (Hav.)
A western Norwegian small mountain farmer and amateur cryptogamic botanist.
External links
- Kjerland, Sevrin, and Hans S. Haugse. 2005. Johan Havaas, fjellbonde og vitskabsmann. University of Bergen, Bergen Museum, Bergen, Norway. 206 p. ISBN 82-303-0396-7
- Botanical Electronic News - Book review on biography of Johan Havaas
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