ISBN 4766413857 books & textbook
Keizai kakusa hendō no jittai yōin eikyō
Yoshio Higuchi; Miki Seko; Keiō Gijuku Daigaku. Keishō Renkei 21-seiki COE.
Tōkyō : Keiō Gijuku Daigaku Shuppankai, 2007. /2007-10-01 Tankobon Softcover
isbn-10: 4766413857 / isbn-13: 9784766413854
