A scientific note on in vitro experimental infection of American foulbrood in honeybees Apis mellifera L Tomoko Sakogawa, Shigeaki Kataoka, Atsuko Okayama, Chie Nakajima and Toyoaki HayamaApidologie, 30 1 (1999) 75DOI: https://doi.org/10.1051/apido:19990109