Methods of soil analysis for water management for agricultural purposes; chemical laboratory tests; determination of oxalate soluble iron content in a soil— 2 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 6: Determination of iron soluble in oxalate solution— 3 стр.
