Proterandrie bij bijengeslachten.

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Journal	Entomologische Berichten
Rights	CC BY 3.0 NL ("Naamsvermelding")
Organisation	Nederlandse Entomologische Vereniging
Citation APA Style AAA Style APA Style Cell Style Chicago Style Harvard Style IEEE Style MLA Style Nature Style Vancouver Style American-Institute-of-Physics Style Council-of-Science-Editors Style BibTex Format Endnote Format RIS Format CSL Format DOIs only Format	B.J.J.R. Walrecht. (1936). Proterandrie bij bijengeslachten. Entomologische Berichten, 9(211), 270–272.

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