ISBN 4844607642 books & textbook
Konkurīto o manabu : sekōhen
Hidetaka Umehara; Minoru Kunieda; Eiji Iwatsuki; Yasuaki Ishikawa; Takumi Uehara; Kōichi Kobayashi
Tōkyō : Rikōtosho, 2011. /2011-03-01 Tankobon Hardcover
isbn-10: 4844607642 / isbn-13: 9784844607649
