[Syrphidae] Kindly ask for two works

[Robert Żóralski]

Hello,

Friends, I am trying to reach the two publications below. Maybe some of 
you has electronic version or could help we sending scan?

LUCAS, J.A.W., 1974, Syrphiden in de jaren 1969-1972. Entom. Berch., 34.
CLAUSSEN, C. 1988. Neue Synonyme in der Gattung Cheilosia (Diptera: 
Syrphidae). Entomologische Zeitschrift 98: 203-205.

I would be very thankful.

Robert Zoralski
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