Zwaluwentrek in 1918

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Journal	De Levende Natuur
Rights	CC BY 3.0 NL ("Naamsvermelding")
Organisation	De Levende Natuur
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	D.J. van Tongeren. (1918). Zwaluwentrek in 1918. De Levende Natuur, 23(8), 285–285.

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