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“The intended audience of the book consists of graduate students, researchers, statisticians and psychometricians who are interested in equating theory, as well as practitioners who equate tests. … volume is easy to understand since overall it is clear and well written, and has examples that are nice and easy to follow. … I recommend this book for anyone with an interest in the equating research field, and … the book has succeeded in providing a statistical view on equating which has long been searched for.” (Marie Wiberg, Psychometrika, Vol. 78 (1), January, 2013)