I had this book bookmarked somewhere and now I have lost it somewhere. The only faint description I can remember was something about a culture of Seminars in Hungary and it was decided that a series should be tailored for undergrads. The content of the resulting seminar(s) were compiled and translated into the book.
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Possibly this book by Laczkovich is what you have in mind. And if it is not, still do consider it, it is very good. The book is I think available in Hungarian, if that is your preference. The book may be also available as an E-book download from the usual disreputable sources.