ISBN 4407333588 books & textbook
Reikai to enshū nikyū kenchiku sekō kanri gishi shiken tekisuto : 2014
Yoshiharu Okada; Satoshi Satō;
Tōkyō : Jikkyōshuppan, 2014. /2014-02-28 Tankobon Hardcover
isbn-10: 4407333588 / isbn-13: 9784407333589
