UDC 666 . 7 Historical Overview of Refractory Technology ...
2019-5-8 · In the late 70s, I bought a 100 hive outfit and went through all the normal sources of acquiring bees. The operation had only 20 live colonies and a lot of old equipment of various sizes. Imagine that each bottom board had its own entrance reducer; all reducers were a different length. You simply sat in front of each hive and tried them until ...
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