The evolution of the production in 20 Brazilian journals in Archive Science, Library and Information Science and Documentation is described (1972 to 2006). A total of 3,706 bibliographic records was examined. Tables and figures are presented, related to total number of published articles, total number of multiple authorship (co-authorship) articles, total number of journal titles, and average number of articles per journal. Final results show an yearly average production of 175 articles (2000 to 2006); yearly average productivity of 16 articles/year/journal (2000 to 2006); the percentage of articles in co-authorship is 49.16%, close to the average percentage of single authorship articles, of 50.84% in 2006, and 85% of co-authorships from articles with two or three authors (1972 to 2006). In conclusion, discussion about the possible causes of these results is presented.
periodical article; scientific production; multiple authoring; co-authoring; Brazil
