共 9 条
[2]
CURLL ML, 1984, GRASS FORAGE SCI, V40
[5]
NEWTON JE, 1984, 16TH P OCC S BRIT GR, P109
[6]
SHELDRICK RD, 1984, 1983 84 GRASSL RES I, P76
[7]
STEEL R. G. D., 1960, PRINCIPLES PROCEDURE
[8]
THOMSON DJ, 1979, 10TH P OCC S BRIT GR, P101
[9]
1965, OFFICIAL METHODS ANA