Fries, I. (1988). Contribution to the study of nosema disease (Nosema apiz Z.) in honey bee (Apis mellifera L.) colonies. Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management.

Fries, Ingemar. Contribution to the Study of Nosema Disease (Nosema Apiz Z.) in Honey Bee (Apis Mellifera L.) Colonies. Uppsala: Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management, 1988.

Fries, Ingemar. Contribution to the Study of Nosema Disease (Nosema Apiz Z.) in Honey Bee (Apis Mellifera L.) Colonies. Swedish University of Agricultural Sciences, Dept. of Animal Nutrition and Management, 1988.