TY  - JOUR 
T1  - Levels of mineral mixture and urea in supplementation of crossbred heifers, with Gyr predominance, reared at pasture during the dry season
JO  - Revista Brasileira de Zootecnia
A1  - Mendonça, Bruno Pietsch Cunha
A1  - Lana, Rogério de Paula
A1  - Mancio, Antonio Bento
A1  - Detmann, Edenio
A1  - Barbosa, Analívia Martins
A1  - Guimarães, Geicimara
SN  - 1516-3598
UL  - 10.1590/S1516-35982010001000025
VL  - 39 
Y1  - 2010
PB  - Brasil 
ER  -