Petersen, J.B. (1928). The aërial Algae of Iceland. In: Rosenvinge, L.K. & Warming, E. (ed.) "The Botany of Iceland", vol. 2, part 2, no. 8. J. Frimodt, Kobenhavn., pp. 325-447.
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Petersen, J.B.
1928
The aërial Algae of Iceland.
In: Rosenvinge, L.K. & Warming, E. (ed.) "The Botany of Iceland", vol. 2, part 2, no. 8. J. Frimodt, Kobenhavn.