TY - BOOK ED - Apimondia Symposium of Bee Biology and Pathology Merelbeke : TI - Biological aspects of nosema disease: proceedings T2 - APIMONDIA U1 - 638.154 21st ed. PY - 1977/// CY - Bucharest PB - Apimondia Publishing House KW - Conference proceedings KW - Nosema apis-disease KW - Nosema-biology ER -