共 10 条
[2]
BONE J. S., 1963, JOUR BRIT GRASSLAND SOC, V18, P295
[3]
BONE J. S., 1963, JOUR BRIT GRASSLAND SOC, V18, P190
[4]
GOODE JE, 1959, REP E MALLING RES ST, VA 43, P78
[5]
MILLER MD, 1951, CALIF AGRIC EXT SERV
[6]
NIX JS, 1961, 55 REP FM ECON BRCH
[7]
ZALESKI A., 1964, J NAT INST AGR BOT, V10, P110
[10]
1962, IRRIGATION GREAT BRI