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1.

図書
図書
1. The economics of product differentiation (: set ; v. 1 ; v. 2)
edited by Jacques-François Thisse and George Norman
出版情報: Aldershot, Hants, England ; Brookfield, Vt. : E. Elgar, 1994
シリーズ名: The international library of critical writings in economics / series editor, Mark Blaug ; 37
An Elgar reference collection
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2.

図書
図書
2. Product differentiation and non-price competition
Norman J. Ireland
出版情報: Oxford ; New York : B. Blackwell, 1987
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