Пётр Сакара - Борьба с клещом варроа в современных условиях промышленной пасеки.
Пётр Сакара Petru Sacara (Молдова), промышленный пчеловод, пасека 1200 пчелосемей.
Тема: «Опыт промышленного пчеловода Молдовы (методы пчеловожден...
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