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Published by Electronic Industry Press, 2014
ISBN 10: 7121221179ISBN 13: 9787121221170
Seller: liu xing, Nanjing JiangSu, JS, China
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paperback. Condition: New. Paperback. Pub Date :2014-05-01 Pages: 128 Language: Chinese Publisher: Electronic Industry Press typographical why there are two thermometers? Why 75% of hospital concentration of alcohol used to disinfect? What is the golden rescue time? There are too many children living in the feeling of incredible things. and struck them curious nerves. The book avoids the tedious classroom dogma. rich. interesting examples makes a lot of mathematical knowledge has become a lively. fresh. attracted many .