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Comparison of Traps Collecting Propolis by Honey Bees

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Figure

Figure 1. Traps for propolis collection used in the present experiment: (a) commercial screen; (b) 4 × 4 mm screen; (c) 2 × 2 mm screen; (d) 1 × 1 mm screen; (e) lateral side hive modification
Figure 2. Quantity of propolis (mean ± S.E.) collected in traps from honeybees during the experiment (columns without common letter have significant difference)

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