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Dear People,
Particularly our honoured leader, I would like to know

a) How to reference the online keys correctly, I need to reference keys No. 3 and No. 10.

b) The full reference for Oosterbroek's "The Families of the Diptera of Europe" my photocopy is too dark on the front page/cover to read and the title page is missing.

My thanks in advance for any help offered.

Gordon