Salo, Maija-Liisa, Ulla Peltola, and Kaija Kotilainen. “Diurnal and Daily Variations in the Composition of Cow Faeces”. Agricultural and Food Science 42, no. 4 (December 1, 1970): 238–249. Accessed July 22, 2024. https://journal.fi/afs/article/view/71775.