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Hi Larry

I must have missed this thread first time round.

I concur, all of the above too, but would add:

Dipterists Forum is from only £6.00.

If one is patient, you should be able to get reasonable copy of C&H on Ebay cheaply, especially if not fussy about perfect condition and 1st edition. I paid £7.00 for my copy. but I had to wait a while for one to come up at the right price.

I would also add that if one networks on here and on the Dipterists Forum website, one should be able to have pdf's of some keys e-mailed

Mark