Revisio synoptica apum borealium, comparatis speciebus Europae mediae /
Nylander, William,1822-1899.
[Helsingfors : s.n.,
1852.]
Caption title.
"Societ. Scient. exhib. die 8 Dec. 1851."--below caption title.
Includes bibliographical references.
Bees
Finland Helsinki.