ISBN: 9787543695504 - 我发现了！（科普绘本）（套装共12册） (1 risultati)

paperback. Condizione: New. Ship out in 2 business day, And Fast shipping, Free Tracking number will be provided after the shipment.Paperback. Pub Date :2013-08-01 Language: Chinese Publisher: Qingdao Publishing House sound : our side is filled with a variety of sounds. but you know how the sound is produced it? What we do hear them ? All knowledge about the sound. the voice can be found in both . There are many experiments in the book . through these experiments. you can personally uncover the mysteries of sound ! Force : much of the force you know? After reading force . you will learn a variety of knowledge about power.Four Satisfaction guaranteed,or money back.…