TY  - JOUR 
T1  - Variability of the wheat powdery mildew pathogen Blumeria graminis f. sp. tritici in the 2003 crop season
JO  - Fitopatologia Brasileira
A1  - Costamilan, Leila M.
SN  - 0100-4158
UL  - 10.1590/S0100-41582005000400015
VL  - 30 
Y1  - 2005
PB  - Brasil 
ER  -