Breuning Madsen, Henrik. “H. De Bakker: MAJOR SOILS AND SOIL REGIONS IN THE NETHERLANDS Centre for Agricultural Publishing and Documentation, Wageningen 1979, 203 s., ill., 25 Cm, Dfl. 100,-”. Geografisk Tidsskrift - Danish Journal of Geography 81 (January 1, 1981). Accessed December 7, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/45155.