[Comparative studies on the pairing swarm in bumblebees (Bombus) and parasitic bumblebees (Psithyrus). I].

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@article{Haas1967ComparativeSO, title={[Comparative studies on the pairing swarm in bumblebees (Bombus) and parasitic bumblebees (Psithyrus). I].}, author={A . P . de Haas}, journal={Zeitschrift für Tierpsychologie}, year={1967}, volume={24 3}, pages={257-77} }