Methods of soil investigations for agricultural water engineering - Field tests - Part 7: Determination of infiltration rate by double ring infiltrometer— 3 стр.
Methods of soil investigations for agricultural engineering - Physical laboratory tests - Part 9: Determination of the saturated hydraulic water conductivity in the cylindrical core-cutter— 7 стр.
Methods of soil investigations for agricultural water engineering - Physical laboratory tests - Part 13: Determination of soil density, total pore volume and porenumber of mineral soils— 3 стр.
Methods of soil investigations for agricultural engineering - Chemical laboratory tests - Part 6: Determination of iron soluble in oxalate solution— 3 стр.
Methods of soil investigations for agricultural engineering - Chemical laboratory tests - Part 7: Determination of readily soluble bivalent iron— 3 стр.
Methods of soil investigations for agricultural engineering; chemical laboratory tests, determination of electrical conductivity of water and of soil saturation extracts— 3 стр.