Ryoichi Ichihashi books & textbook
Gan kanja no kea manejimento : Zaitaku taminaru o sasaeru nanatsu no fezu nijuichi no jissen.
Ryoichi Ichihashi; Hideki Wakabayashi; Atsushi Araki
Chuohokishuppan. /2015-03-01 Tankobon Hardcover
isbn-10: 4805851414 / isbn-13: 9784805851418
