共 50 条
- [1] FLAME PHOTOMETRIC DETERMINATION OF EXCHANGEABLE MAGNESIUM IN SOILS SOIL SCIENCE SOCIETY OF AMERICA PROCEEDINGS, 1952, 16 (01): : 51 - 55
- [4] ELIMINATION OF CALCIUM INTERFERENCE IN THE FLAME PHOTOMETRIC DETERMINATION OF SODIUM AND POTASSIUM IN CALCIUM SALTS SPECTROCHIMICA ACTA, 1962, 18 (06): : 867 - 867
- [9] Note on the determination of exchangeable sodium in soils JOURNAL OF AGRICULTURAL SCIENCE, 1930, 20 : 355 - 358