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Google圖書搜尋
Newspapers' Market Shares and the Theory of the Circulation Spiral
Jean J. Gabszewicz
Paolo G. Garella
Nathalie Sonnac
出版
CORE
, 2005
URL
http://books.google.com.hk/books?id=rKKG0AEACAAJ&hl=&source=gbs_api