ISBN 4254117884 books & textbook
Ōyō ni yakudatsu 50 no saitekika mondai
Katsuki Fujisawa; Shunji Umetani; Mikio Kubo; Akihisa Tamura; Tomomi Matsui
Tōkyō : Asakurashoten, 2009. /2009-08-01 Tankobon Hardcover
isbn-10: 4254117884 / isbn-13: 9784254117882
