共 8 条
[1]
BLOODWORTH M. E., 1956, AGRON JOUR, V48, P222
[2]
BRUCE RR, 1959, MISSISSIPPI FARM RES, V22
[3]
GRISSOM P, 1955, 531 MISS STAT COLL A, P1
[4]
HALL WC, 1958, 285 TEX AGR EXP STAT, P3
[5]
SCARSBROOK C. E., 1959, AGRON JOUR, V51, P718
[6]
SPOONER A. E., 1958, AGRON JOUR, V50, P74
[8]
WALHOOD VT, 1955, CALIFORNIA AG, V9, P9