❣️New Year's Sale!❣️ ❣️Significant price reductions possible!❣️ ❣️I'm decluttering!❣️ This is a research journal on economics from the Osaka City University Economics Society (now Osaka Metropolitan University). There are 20 volumes in total. The list price per volume is around 1200 yen to 2500 yen, depending on the thickness. It's a specialized academic journal where economics faculty members present their research findings. I collected these when I was a student in the economics department to learn more about the specialized fields of each professor. I intended to use them as a reference for exams, but the content was too advanced for undergraduates, and they weren't helpful for exam preparation. You can't buy these anywhere except at the university co-op. They are published by "Nihon Hyoronsha," a first-rate publisher in the field of economics.