TY  - JOUR 
T1  - Genetic parameters of test day milk yields of Holstein cows
JO  - Genetics and Molecular Biology
A1  - Machado, S.G.
A1  - Freitas, M.A.R.
A1  - Gadini, C.H.
SN  - 1415-4757
UL  - 10.1590/S1415-47571999000300016
VL  - 22 
Y1  - 1999
PB  - Brasil 
ER  -