Author: WIRZÉN, Johan Ernst Adhemar (1812-1857).:
Title: Dissertatio academica in geographica plantarum per partem provinciae Casanensis distributione illustranda periculum sistens [...].. Respondente Petro Edvardo Åberg [...].
Description: Helsingfors: Frenckell, 1839. 8vo, 21cm. Pp. [ii],130, 1 fold. letterpress table. Plain new interim wrappers, uncut. Light dust-marking to first and last page, very good otherwise. - The author was a Finnhish botanist, traveller, and physician.He visited Russia in 1832-1835 which led to his present doctoral thesis about the vegetation in the Kazan Province in Western Russia. Stafleu & Cowan 18.049.

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