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Bartering

Nicolas Brasch

出版	Thomson Nelson, 2007
主題	Juvenile Fiction / Classics
ISBN	01701255999780170125598
URL	http://books.google.com.hk/books?id=u4CPmgEACAAJ&hl=&source=gbs_api

註釋

Bartering came before money. People swapped one kind of good or service for another. Bartering still goes on today.