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2. Los complejos respiratorio-septicémicos de las aves en México;Camacho,2000
3. Contemporary European infectious bronchitis variants;Cargill;World's Poult. Sci. J.,1998
4. Case report of avian indigestion and diuresis syndrome in stunted mexican broiler chickens;Casaubon,1997
5. Infectious bronchitis;Cavanagh,1997