1. A field study of soil water depletion patterns in presence of growing soybean roots, I. Determination of hydraulic properties of the soil;Arya,1975
2. Soil survey and the study of water in unsaturated soil;Bouma;Soil Surv. Inst., Wageningen, Soil Surv. Pap. 13,1977
3. A case study on infiltration into dry clay soil. I. Morphological observations;Bouma;Geoderma,1978
4. A case study on infiltration into dry clay soil, II. Physical measurements;Bouma;Geoderma,1978
5. Drainability of some Dutch clay soils: a case study of soil survey interpretation;Bouma;Geoderma,1979