Crop yield responses to temperature fluctuations in 19th century Finland: provincial variation in relation to climate and tree-rings.Published in:Boreal Environment Research, 2015, v. 20, n. 6, p. 707By:Huhtamaa, Heli;Helama, Samuli;Holopainen, Jari;Rethorn, Carolin;Rohr, ChristianPublication type:Article