I count every day. mental arithmetic calculation speed calculation simple calculation of (2 with one to teach new curriculum)(Chinese Edition) [Chinese]

By LU YAO // DOU HONG MEI // DING ZHAO RONG

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• Format: Paperback
• Language: Chinese
• ISBN: 7538355723
• ISBN13: 9787538355727
• Release Date: January 2000
• Publisher: Jilin Education Pub. Date :2009-04-01 version 1
• Weight: 1.01 lbs.