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Hi everybody,
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I'm looking for the following references.
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Drenski, P. 1934. Die Fliegen der Familie Syrphidae (Diptera) in Bulgarien. – Mitt. Bulg. ent. Ges., 8, 108-
<br>131 (in Bulgarian).
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Bankowska, R. 1967. Materiaux pour l’etude des Syrphidae (Diptera) de Bulgarie. – Fragmenta faunistica,
<br>13 (21), 345-389.
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Kula, E., 1985. A contribution to the knowledge of Syrphidae (Diptera) in Yugoslavia. Acta Universiates Agriculturae et Silviculturae, Brno, (ser.C) 54: 203-223.
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Best regards,
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Leendert-Jan van der Ent
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