Year in year out students complain they have bought books they never used. To avoid waste, do not look at any kind of book lists. Do not buy books in advance. Many of the books that are listed, are not used. Many of the sources that are used, are not listed. Wait for the classes to start. On your arrival, collect as much information from other reliable sources (students) as you possibely can. Draw your own conclusions and finally get the books you really need. Do not worry you will not be able to get your book on time. Poland belongs to the United Europe and, even if your book is not available in Poland, you can order it from any other booksellers like Amazon, to have it within one or two days. That is my advice. Of course, you are to decide.