共 24 条
[1]
ALLEN NN, 1946, J DAIRY SCI, V29, P544
[2]
BAKER AL, 1946, J ANIM SCI, V5, P396
[3]
CURRIE J. R., 1948, JOUR BRIT GRASSLAND SOC, V3, P27, DOI 10.1111/j.1365-2494.1948.tb00837.x
[4]
DAVIES W., 1941, Journal of the Ministry of Agriculture, V48, P112
[5]
DEGEUS J, 1947, MAANDBL LANDB VOORL, V4, P286
[6]
FRISCHNECHT NC, 1949, J AM SOC AGRON, V41, P63
[7]
HAMILTON RA, 1950, 8 P FERT SOC
[10]
HOLMES W., 1948, Farming, V2, P170