Progress in land evaluation: proceedings of a Seminar on Soil Survey and Land Evaluation, Wageningen/Netherlands/26-29 September, 1983 - Seminar on Soil Survey and land Evaluation (1983 : Wageningen, Netherlands); Haans, J. C. F. M.; Steur, G.G.; Heide, G. (Rotterdam: A. A. Balkema, 1984)
Keywords: Land use -- Congresses; Soil -- surveys -- Congresses