Soil salinity and alkalinity in the Great Konya Basin, Turkey / P.M. DriessenLand-use systems analysis / P.M. Driessen, N.T. KonijnSoils of the Çumra Area, Turkey / P.M. Driessen and T. de MeesterExercises in common sense / Paul M. DriessenSoil salinity and alkalinity in the Great Konya Basin, Turkey / P. M. Driessen