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References
- 1 2 3 Seaward, M. R. D. (1997). "Obituary Frank Hatton Brightman (1921 - 1996)" (PDF). The Lichenologist. 29 (2): 199–203. Retrieved 26 January 2024.
- ↑ Briggs, Mary (1997). "Obituary Notes" (PDF). BSBI News. 75: 58–59. Retrieved 3 February 2024.
- ↑ "Frank Hatton Brightman (1921-1997)". Herbariaunited. Retrieved 3 February 2024.