Pessi, Yrjö, and Mauri Takala. “Some Results of Measurements at the Leteensuo Experimental Station Relating to the Temperatures of Air and Soil and to the Humidity of Air in the Summer of 1958”. Agricultural and Food Science 31, no. 1 (January 1, 1959): 207–211. Accessed December 22, 2024. https://journal.fi/afs/article/view/71486.