ISBN 7807304294 books & textbook
Mathematical Olympiad Jingjiang and Test (grade 9)
YE SHENG YANG HU JUN LI JIAN HUA XIONG BIN FENG ZHI GANG
Academia Press Pub. Date :2007-10-01 /1991-01-01 Paperback
isbn-10: 7807304294 / isbn-13: 9787807304296
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