abacus tutorial(Chinese Edition)

Language:Chinese.Paperback. Pages Number: 195 Publisher: Lixin Accounting Press Pub. Date :2007-03-01. This book is the abacus tutorial revision . The scientific content of the book on the abacus was introduced. the history of abacus in China made a more concise summary in the appendix to add some new content. so the historical development of the people on the abacus abacus mileage and has the overall prospects for the development of science and technology hold on; of the abacus calculation t.