共 8 条
[2]
ELSADEK GM, 1944, THESIS U READING
[3]
HAMMER BW, 1913, B IA AGR EXP STA, V156
[4]
JONES AUDREY, 1952, PROC SOC APPL BACT, V15, P82, DOI 10.1111/j.1365-2672.1952.tb00010.x
[5]
RICHARDS T, 1949, J DAIRY RES, V16, P46, DOI 10.1017/S0022029900005264
[7]
1936, 696 BRIT STAND I S 2
[8]
1940, 895 BRIT STAND I STA