共 80 条
[1]
BAILEY EH, 1932, USDA TECH B, V291
[2]
BEAN AH, 1936, SOIL SURVEYS SER, V10
[3]
BJORLYKKE KO, 1928, P 1 INT C SOIL SCI, V4, P223
[5]
BROWN IC, 1936, P SOIL SCI SOC AM, V3, P269
[6]
BROWN IC, 1933, USDA TECH B, V399
[7]
BROWN IC, 1935, USDA TECH B, V502
[8]
BROWN IC, 1938, USDA TECHN B, V609
[9]
BROWN LA, 1934, SOIL SURVEYS SER
[10]
BYERS HG, 1935, USDA TECH B, V484