共 26 条
- [1] Anderson MS, 1929, J AGRIC RES, V38, P0565
- [2] ANDERSON MS, 1926, USDA B, V1452
- [3] ANDERSON MS, 1931, USDA TECH B, V228
- [4] Baver L.D., 1931, J AM SOC AGRON, V23
- [5] BAVER LD, 1930, J AM SOC AGRON, V22, P703
- [6] BAVER LD, 1931, P INT SOC SOIL SCI R, V2, P288
- [7] BAVER LD, 1928, J AM SOC AGRON, V29, P921
- [8] BAVER LD, 1929, MISSOURI AGR EXP STA, V129
- [9] BRADFIELD R, 1923, J AM CHEM SOC, V45, P1245
- [10] Denison IA, 1930, J AGRIC RES, V40, P0469