First of all, go to Cute.Catalog（Kyushu University Libraries Catalog） and make search. The search result tells you that we own the item or not. Then, information page of a specific material from the result shows you further information such as which library owns it and which section of the library is the right location. You can also jump to location maps(Japanese) by clicking on "location." For more details, feel free to ask us!
How can I get to know the location of a specific item?