Balstrøm, Thomas. “Remote Sensing and Geographical Information Systems for Resource Management in Developing Countries. Eds. Alan S. Belward & Carlos R. Valenzuela. (Euro Courses: Remote Sensing, Vol. 1”. Geografisk Tidsskrift 92 (januar 1, 1992). Set december 5, 2025. https://tidsskrift.dk/geografisktidsskrift/article/view/44870.