1. Evaluation of cytopathologic changes induced in chicken tracheal epithelium by Mycoplasma gallisepticum in vivo and in vitro;Dykstra;American Journal of Veterinary Research,1985
2. Early detection of tracheal damage in chickens by scanning electron microscopy;Hod;Avian Diseases,1982
3. Vaccination of free range chickens against Newcastle Disease;Ibrahim,1986
4. Avian Mycoplasmas;Jordan,1979
5. Airsacculitis induced in broilers with a combination of Mycoplasma gallinarum and respiratory viruses;Kleven;Avian Diseases,1978