1991 - Japanese Abacus Its Use and Theory (Paperback) ISBN-13: 9780804802789 ISBN-10: 0804802785 Genre: Science & Math 1 Advanced Abacus Theory and Practice (Paperback) ISBN-13: 9780804800037 ISBN-10: 0804800030 Genres: Business & Money, Reference, Science & Math ? Models and Prototypes (Paperback) ISBN-13: 9784766106176 ISBN-10: 4766106172 Genres: Arts & Photography, Engineering & Transportation ? |