1.
Koivula M. The history of amateur ornithology in southern Finland – Linnut – elämäni harrastus. Lintuharrastuksen historiaa by Aula (2011). Ornis Fenn [Internet]. 2011Jul.1 [cited 2024Nov.2];88(2):116–120. Available from: https://ornisfennica.journal.fi/article/view/133772