Periódicos en papel: precios*
1986 - 1998: suscriciones + 152%, - 14% suscriciones (ARL Statistics 1997-98, Published in May, 1999 http://www.arl.org/stats/arlstat/9798pr.html)
*SERIALS Prices 1995-1999 with projections for 2000. USA, Ebsco, 2000.
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