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Principles of Economics

Roy RuffinPaul R. Gregory

出版	Scott, Foresman, 1988
主題	Business & Economics / Economics / MacroeconomicsBusiness & Economics / Economics / General
ISBN	06731888339780673188830
URL	http://books.google.com.hk/books?id=JnsRAQAAMAAJ&hl=&source=gbs_api