共 12 条
[4]
GORTNER RA, 1915, BIOCH B, V4, P52
[5]
The accurate determination of nitrates in soils
[J].
INDUSTRIAL AND ENGINEERING CHEMISTRY,
1924, 16
:180-183
[6]
Harvey RB, 1918, J AGRIC RES, V15, P0083
[8]
Korstian CF, 1924, J AGRIC RES, V28, P0845
[10]
LIPMAN CB, 1912, U CAL PUB AGR SCI, V1, P21