TY  - JOUR 
T1  - Conception rate in Holstein cows treated with GnRH or hCG on the fifth day post artificial insemination during summer
JO  - Arquivo Brasileiro de Medicina Veterinária e Zootecnia
A1  - Beltran, M.P.
A1  - Vasconcelos, J.L.M.
SN  - 0102-0935
UL  - 10.1590/S0102-09352008000300009
VL  - 60 
Y1  - 2008
PB  - Brasil 
ER  -