"Subarashiku Jitsuryoku ga Tsuku to Hyoban no Bibun Sekibun Campus Zemi Daigaku no Sugaku ga Konna ni Wakaru! Tan'i nante Rakuni Toreru!" (Calculus Campus Seminar, Highly Praised for Improving Skills! You'll Understand University Math So Much! Getting Credits is Easy!) Keishi Baba Price: ¥2380 There are no markings, and the inside is as clean as new, but as shown in the third photo, there is a slight stain. #KeishiBaba #book #nature/mathematics"