Publishers Kuroshioshuppan

Cover for Mayumi · Tobira (Paperback Book) (2009)

Cover for Michio Tsutsui · Tobira. Grammar Power (Book) [Japanese And English edition] (2012)

Japanese And English edition

Tobira. Grammar Power (2012)

Cover for Mayumi Satoru · Tobira 1: Beginning Japanese - Textbook - Shokyu Nihongo - Includes Online Resources (Paperback Book) (2021)

Tobira 1: Beginning Japanese - T... (2021)