On movements of the swift, Micropus a. apus L., during the breeding-season
Viittaaminen
Koskimies, J. (1947). On movements of the swift, Micropus a. apus L., during the breeding-season. Ornis Fennica, 24(3–4), 106–111. Noudettu osoitteesta https://ornisfennica.journal.fi/article/view/132503