共 20 条
[4]
DONEFER E, 1973, EFFECT PROCESSING NU
[6]
GOERING HK, 1970, ARS379 USDA AGR HDB
[7]
MCLEOD MN, 1969, J BRIT GRASSLAND SOC, V24, P244
[8]
Mertens D. R., 1973, THESIS CORNELL U ITH
[9]
MERTENS DR, 1977, FED PROC, V36, P187
[10]
MINSON D. J., 1963, JOUR BRIT GRASSLAND SOC, V18, P39, DOI 10.1111/j.1365-2494.1963.tb00324.x