The new book by Bogdan Wiśniowski is a monograph of Chrysididae of Poland. It was published in 2015 as the second volume of the series of books on Polish Hymenoptera Aculeata. Another volume will be published in 2017.
Some more information about the book you can find here:
Cuckoo-wasps (Hymenoptera: Chrysididae)
Mundus Projekt 
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