共 20 条
[1]
[Anonymous], 1975, OFFICIAL METHODS ANA
[3]
Crampton EW, 1938, J NUTR, V15, P383
[5]
GARDNER FP, 1961, IOWA FARM SCI, V15, P3
[7]
Goering H.K., 1970, USDA ARS AGR HDB, V379
[9]
JOHNSON CM, 1959, CALIF AGR EXP STA B, V766
[10]
KIRK L. E., 1934, Scientific Agriculture, V14, P569