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As I requested some books in this store, this time one of the books chosen it is soldout. I can choose another book until ?15 value.

So I was searching for books that could fit that price. I want to know if you think that one of the following books worth the price.... (

"The British Tachinidae of Walker and Stephens (Diptera)"

"Sepsidae. Diptera." Pont, A.C. / RES edition.


"Schwebfliegen und Blasenkopffliegen Mitteleurpas:" Kormann, K. -- About Conopidae, I think?...


Any ideas/books (considering the ?15 value!) concerning these my favorite families: Acroceridae, Bombyliidae, Conopidae, Stratiomyidae, Sciomyzidae, Ulidiidae.

Thank you. :)