Beginning Fun With Water & Bubbles Beginning Fun With Science Ser

ISBN: 9781570291517

出版社: Warren Pub House

出版年: 1997-1

页数: 16

定价: 30.00

装帧: 简装

内容简介

55664,All About Sound ,All About Sound ,0893758787,David C. Knight,30.00,10.00,Troll Communications,Jun-83,简装,30,,,All About Sound , Card catalog description Questions and answers provide basic information about sound， including its formation， pitch， variety， mode of travel， echo， and how ears receive sound waves.