共 33 条
[2]
ALWAY FJ, 1934, AM SOIL SURVEY ASS B, V15, P81
[3]
BODMAN GB, 1935, AM SOIL SURVEY ASS B, V16, P97
[4]
Chandler RF., 1937, J FOREST, V35, P27
[5]
CHAPMAN AG, 1934, AM SOIL SURVEY ASS B, V15, P39
[8]
FALCK R., 1930, FORSTARCHIV, V6, P366
[9]
Frear DE, 1930, J BIOL CHEM, V88, P675
[10]
GARSTKA WU, 1932, J FOREST, V30, P396