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Concentration in the press industry and the theory of the "circulation spiral".

Bibliographic reference Jaskold Gabszewicz, Jean ; Laussel, Didier ; Sonnac, Nathalie. Concentration in the press industry and the theory of the "circulation spiral".. CORE Discussion Papers ; 2002/64 (2002)
Permanent URL http://hdl.handle.net/2078.1/4308