1. Technical Monograph Soil Survey No. 6,1974
2. The effects of land-use and climate on valley sedimentation;Bell,1982
3. Soils in North Yorkshire III;Bendelow;Soil Survey Record No. 35,1976
4. Methods of test for soils for civil engineering purposes;British Standards Institution;British Standard 1377,1975
5. Crusting and time–dependent rainwash mechanisms on loamy soil;De Ploey,1981