Author: Petersen, J.B., 1946.:
Title: Algae collected by Eric Hultén on the Swedish Kamtchatka Expedition 1920-22, especially from hot springs. [Kgl. Danske Vid. Selsk. Biol. Medd., 20(1).]
Description: Copenhagen. 8vo. Pp. 122, 20 figs., refs. Orig. wrs. Front cover a little marked, contents very good. Two figures cut out of page and neatly replaced by xerox copies (incl. text on verso). - Mostly on diatoms.

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