共 13 条
[1]
Anderson MS, 1924, J AGRIC RES, V28, P0927
[2]
ANDERSON MS, 1922, USDA B, V1122
[5]
EHRENBERG P, 1922, BODENKOLLIDE, P533
[6]
Fry WH, 1923, J AGRIC RES, V24, P0879
[7]
GILE PL, 1924, USDA B, V1193
[8]
KORNEV VG, 1924, RUSSIAN J EXP AGRON, V22, P105
[9]
KORNEV VG, 1924, SOIL SCI, V17, P428
[10]
MITSCHERLICH EA, 1920, BODENKUNDE LAND FORS, P69