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This article addresses the access to information from a point of view that relates the evolution of technology to the methods of treating information and to the desire for\udknowledge. The first part introduces some important events in ancient times, the end of the middle ages/beginning of the modern age and the XIX century. Then, it presents an overview of the current situation of traditional libraries and compares some characteristics with the corresponding ones for digital libraries. It ends by mentioning the international efforts towards open archives and open access to information; it shows examples of positive results

A produção científica disponível ao mundo: a tecnologia, a vontade e os acessos