＊Stored at home, slightly read book. Standard series from Obunsha. - 1982 Edition, University Entrance Exam Preparation Series 6 - Mathematics IIB (Trends and Countermeasures for National, Public, and Private Universities) - Obunsha - Price: 640 yen - Co-authored by Shizuo Hokari and Ryohei Tsuji - First edition published July 1981 (photo) - Vertical and horizontal stains on the book (photo) - Cover: Crease on the back (photo), stains on the inside of the cover (photo) - Writing: On pages 44, 45, 46, 47, and 49. Blue ink fountain pen (photo). I apologize if I missed anything. - Text: Readable (partially shown in photo). Please purchase with the understanding that this item is over 40 years old.