Poulsen NE, Gudmonsson L, Hansen JM, Husfeldt Y. Palynological preparation techniques, a new Macerationtank-method and other modifications. seriec [Internet]. 1990 Nov. 30 [cited 2024 May 18];10:1-23. Available from: https://geusjournals.org/index.php/seriec/article/view/7104