Methods of soil analysis for water management for agricultural purposes; chemical laboratory tests; determination of easily soluble bivalent iron in a soil— 2 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 - Part 7: Determination of readily soluble bivalent iron— 3 стр.
