共 8 条
- [3] FIELDES M, 1951, SOIL SCI, V72, P719
- [4] KOHNLEIN J, 1952, BODEK PFLANZ, V57, P114
- [6] THE DETERMINATION OF SMALL AMOUNTS OF CALCIUM IN PLANT MATERIAL [J]. ANALYST, 1952, 77 (919) : 529 - 533
- [7] MITCHELL RL, 1936, J SOC CHEM IND LOND, V55, P269
- [8] RIEHM H, 1948, Z ANAL CHEM, V128, P249