Assessment of Coarse Woody Debris : A comparison of probability sampling methods - Ståhl, Göran; Lämås, Tomas; Bachmann, Peter, editor; Köhl, Michael, editor; Päivinen, Risto, editor (Assessment of Biodiversity for Improved Forest Planning : Proceedings of the Conference on Assessment of Biodiversity for Improved Planning, 7–11 October 1996, held in Monte Verità, Switzerland, 1998)