1.

図書
図書
1. Economic concentration : structure, behavior and public policy
[by] John M. Blair
出版情報: New York : Harcourt Brace Jovanovich, 1972
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2.

図書
図書
2. The promotion of price competition where sellers are few
Frank Kottke
出版情報: Lexington, Mass. : Lexington Books, c1978
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