Published December 31, 1909
| Version v1
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Beitrag zur Kenntnis der Apioceriden. (Dipt.) Nebst Bemerkungen über die systematische Stellung der Mydaiden und Asiliden
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taxonomic article digitized by BHL http://biodiversitylibrary.org/page/33103604 and available through BioStor http://biostor.org/reference/101352