共 10 条
[1]
COWAN JR, ADVANCES AGRONOMY, V8, P283
[2]
CUNNINGHAM I. J., 1949, AUSTRALIAN VET JOUR, V25, P27, DOI 10.1111/j.1751-0813.1949.tb04752.x
[3]
JACOBSON DR, 1962, J DAIRY SCI, V45, P663
[4]
JACOBSON DR, 1961, J ANIM SCI, V20, P960
[5]
JACOBSON DR, 1957, J DAIRY SCI, V40, P613
[6]
JACOBSON DR, 1963, KENTUCKY AGR EXPT ST
[7]
MERRIMAN GM, 1955, TENN FARM HOME SCI P, V16, P8
[8]
Owen E. C., 1944, JOUR DAIRY RES, V13, P243, DOI 10.1017/S0022029900003836
[9]
PULSFORD MP, 1950, AUSTRALIAN VET J
[10]
YATES SG, 1963, KENTUCKY AGR EXPT ST