共 7 条
[1]
JUSKA FV, 1967, AM SOC HORTIC SCI, V90, P413
[2]
LUNT OR, 1963, GOLF COURSE RPTR, V31, P30
[3]
MUSSER H. B., 1958, AGRON JOUR, V50, P381
[4]
PRITCHETT WE, 1959, GOLF COURSE RPTR, V27, P18
[5]
VOLK GAYLORD M., 1959, AGRON JOUR, V51, P746
[6]
WADDINGTON DV, 1969, 296 PENNS AGR EXP ST, P5
[7]
WHITTAKER COLIN W., 1955, SOIL SCI SOC AMER PROC, V19, P288