TY  - JOUR 
T1  - beta-lactamase production Haemophilus spp. and resistance to ampicillin in a general hospital in Porto Alegre city, RS, Brazil (2001-2005)
JO  - Brazilian Journal of Infectious Diseases
A1  - Ferreira, Jorge A. S.
A1  - Castro, Andréa Cauduro de
A1  - Rocha, Marion P.
A1  - Riboldi, Gustavo
A1  - d'Azevedo, Pedro Alves
SN  - 1413-8670
UL  - 10.1590/S1413-86702007000100013
VL  - 11 
Y1  - 2007
PB  - Brasil 
ER  -