Frafjord, Karl. “Grazing by Sheep Ovis Aries Reduces Island Populations of Water Voles Arvicola Amphibius”. Fauna norvegica 340 (December 19, 2014): 79-81. Accessed November 22, 2024. https://www.ntnu.no/ojs/index.php/fauna_norvegica/article/view/1673.