File:Punttila, P., Kilpelainen, J. 2009. Distribution of mound-building ant species (Formica spp.) in Finland.pdf

Summary
Punttila, P., Kilpeläinen, J. 2009. Distribution of mound-building ant species (Formica spp., Hymenoptera) in Finland: preliminary results of a national survey. Annales Zoologici Fennici 46: 1–15.