ISBN 4822262960 books & textbook
Amazon uebu savisuzu kiso kara no nettowaku ando saba kochiku : Sawatte manabu kuraudo infura.
Ken Tamagawa; Akio Katayama; Yuta Imai
Nikkeibipisha ; Nikkeibipimaketingu. /2014-07-01 Tankobon Hardcover
isbn-10: 4822262960 / isbn-13: 9784822262969
