290,925 GUIDELINES Guidelines on cleaning, disinfection and vector control in Salmonella entritidis infected poultry farms : report of a Workshop on "Preparation of Guidelines on Cleaning and Disinfection/Sanitation in Poultry Farms with S. entertidis" : Bakum/Vechta, 7-11 June 1993. - [S.1.] : World Health Organization, Veterinary Public Health Unit, 1994. - 33 s. ; 30 cm