共 15 条
[1]
ALLISON F. E., 1955, Advanc. Agron., V7, P213, DOI 10.1016/S0065-2113(08)60339-9
[2]
BOATWRIGHT G. O., 1961, Agronomy Journal, V53, P33
[3]
DONEEN LD, 1934, 296 WASH AGR STN B
[7]
McKELL CYRUS M., 1961, AGRON JOUR, V53, P56
[9]
MILLER EC, 1939, 47 KAN AGR EXP STN T