TY  - JOUR 
T1  - Morphological dimorphism in the Y chromosome of "pé-duro" cattle in the Brazilian State of Piauí
JO  - Genetics and Molecular Biology
A1  - Britto, Carmen M.C.
A1  - Mello, Maria Luiza S.
SN  - 1415-4757
UL  - 10.1590/S1415-47571999000300014
VL  - 22 
Y1  - 1999
PB  - Brasil 
ER  -