ISBN 9784621062272 books & textbook
Ryōshi keisan to ryōshi jōhō no genri
Giuliano Benenti; Giulio Casati; Giuliano Strini; Hajime Hirooka;
Tōkyō : Maruzen shuppan. /2012-05-01 Tankobon Softcover
isbn-10: 4621062271 / isbn-13: 9784621062272
