共 9 条
[1]
CHURCHILL BR, 1947, J AM SOC AGRON, V39, P750
[2]
COMSTOCK VE, 1948, J AM SOC AGRON, V40, P1084
[4]
PATERSON D, 1939, STATISTICAL TECHNIQU
[5]
RATHER H. C., 1939, QUART BUTT MICHIGAN AGRIC EXP STA, V21, P281
[7]
WAGNER RE, 1947, J AM SOC AGRON, V39, P141
[8]
WHITEHOUSE K, 1945, J ASSOC OFF AGR CHEM, V28, P147
[9]
1945, METHODS ANAL