H.E. Petersen (Henning [Eiler])
Articles
Petersen, H.E., 1909. Studier over Ferskvands-Phykomyceter. Bot. Tidsskr. 29: [345]-429. ≡
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Petersen, H.E., 1909. An account on Danish submerse Freshwater-Phycomycetes, with systematical remarks. Bot. Tidsskr. 29, (20 Oct) 1909: [430]-440. ≡
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