共 50 条
- [1] RAPID METHOD OF DETERMINING HUMUS CONTENT IN SOILS DOKLADY SOIL SCIENCE USSR, 1966, (13S): : 1536 - &
- [4] A rapid electrometric method for determining the chloride content of soils. JOURNAL OF AGRICULTURAL SCIENCE, 1929, 19 : 533 - 540
- [10] NEW METHOD FOR DETERMINING COPPER CONTENT IN CHERNOZEM SOILS USING DIQUINOYL DISULFIDE SOVIET SOIL SCIENCE-USSR, 1969, (05): : 633 - &