Микронуклеус на 10 пчелок изготовление.
Подробно в журнале пчеловодство N9 за 1951 год.
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![Александр Крупьяк – 300 семей Бакфаста, улья ППС, саморазвитие [УКР]](https://sun9-34.userapi.com/b5U5lgkVHXwM8nqZD_f30USqOtxN1Yg7UmYIsA/5a2TyJAIcaw.jpg)
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