Kahe emaga perede pidamine

mesindus.ee haldajaHõbemedal (500p.)Pronksmedal (100p.)

Esialgu inglise keeles materjale kahe emaga perede pidamisest:

    1. "Two-Queen Colony management" by C. L. Farrar, Division of Bee Culture, United States Department of Agriculture, Agricultural Research Administration, Bureau of Entomology and Plant Quarantine, May 1946.
    2. Two-Queen System Of Honey Bee Colony Management

    Seda kannet ei ole veel hinnatud