共 10 条
[2]
BERGEY DH, 1904, PA DEP AGR B, V125
[3]
BREED RS, 1941, NY GENEVA AGR EXPT S, V380
[4]
Cone J. Frank, 1944, JOUR DAIRY SCI, V27, P215, DOI 10.3168/jds.S0022-0302(44)92585-3
[5]
LITTLE RB, 1946, BOVINE MASTITIS S
[6]
MACLEOD P, 1952, STORRS CONN AGR EXPT, V290
[7]
PLASTRIDGE WN, 1946, STORRS CONN AGR EXPT, V255
[8]
ROSS HE, 1911, N Y CORNELL AGR EXPT, V303
[9]
WAYNE RALPH, 1933, JOUR DAIRY SCI, V16, P79, DOI 10.3168/jds.S0022-0302(33)93318-4
[10]
1941, STANDARD METHODS EXA