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Citation: M. Berthold et B. Berthold, BEEKEEPING IN EGYPT, American bee journal, 137(2), 1997, pp. 129-131

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Citation: R. Wirth et al., KNOWLEDGE-BASED SUPPORT OF SYSTEM-ANALYSIS FOR THE ANALYSIS OF FAILURE MODES AND EFFECTS, Engineering applications of artificial intelligence, 9(3), 1996, pp. 219-229

Authors: BERTHOLD B

Citation: B. Berthold, BUILDING YOUR OWN WAX PROCESSOR, American bee journal, 133(12), 1993, pp. 856-857