B. Madsen, H. (1980) “S. Western: Soil Survey Contracts arfd Quality Control. Monographs on soil survey. Oxford University Press, Oxford 1978. 284 s., 14x22 cm. £12.50”., Geografisk Tidsskrift, 80. Tilgængelig hos: https://tidsskrift.dk/geografisktidsskrift/article/view/45310 (Set: 5 december 2025).