Diseases of bees / Ministry of Agriculture and Fisheries.

Date:
1948
Catalogue details

Licence: Public Domain Mark

Credit: Diseases of bees / Ministry of Agriculture and Fisheries. Source: Wellcome Collection.

    19/36 (page 15)
    IIG: 5, AMERICAN FOUL BROOD. -Ihe “ ropiness ’’ test. Fic. 6. AMERICAN FouL Broop. How to examine comb for the presence of scales (see also p. 3).