請問有關紙張製造及回收及利用的知識? - 生活
By Oliver
at 2006-03-10T00:00
at 2006-03-10T00:00
Table of Contents
請幫我找一下:1.一棵樹(多大)可以製造出多少張紙2.如何利用廢紙3.利用廢紙製造出的玩具及生活用品4.全世界及台灣的用紙量?謝謝...Showmore
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By Carol
at 2006-03-14T05:09
at 2006-03-14T05:09
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