Raukas A, Stankowski W. The Kaali crater field and other geosites of Saaremaa Island (Estonia): the perspectives for a geopark. logos [Internet]. 2010 Apr. 26 [cited 2024 May 18];16(1):59-68. Available from: https://pressto.amu.edu.pl/index.php/logos/article/view/v10118-010-0004-z