Abstract

Aproximately twenty years ago the electronic journals appeared. Since then, scientific publication system has been undergoing a slow transition, though it seems that its destiny is not exactly what was predicted. Now that social sciences are changing the way they disseminate knowledge, [...]

Abstract

A review of the first hundred years of Chemical Abstracts Service (CAS) reviews its significance and role as: (i) a witness to the changes in international scientific leadership; (ii) a classical example of scientific documentation; (iii) a general catalogue of chemical molecules [...]