1.
Wybranowski D. Natural conditions as an one factor belonging to war campaigns in Thietmar’s and Gallus Anonymous’s narration. Appendix to first Piast’s policy. In: Grabarczyk T, Pogońska-Pol M, eds. Armia Kontra Natura. Vol. 2. Faces of war. Lodz University Press; 2020:81-120. doi:10.18778/8220-057-7.05