This study by two Ph.D. students in library science reviewed a systematic sample of the research literature in library and information science published in 62 core library journals in 1983 to order to identify substantive articles and compare their findings on research methodologies and trends with those reported in a similar study performed in 1980. A sample of 250 articles was selected from the 1,912 substantive articles identified. Each of 61 research articles selected from the sample was then classified by research methodology, subject areas, statistical methods, and author affiliations. The final analysis and comparison led to the following two conclusions: (1) the core of journals under consideration was expanded in the present study, and therefore suggested possible differences in quality as well as quantity of the literature studied; and (2) the study was based on a sample, rather than on all the substantive articles published in core journals during a given year, indicating that less confidence could be associated with the findings on research methodologies. Suggestions for future work in this area include the application of multidimensional scaling techniques in determining the subject areas for the articles, and characterization of the articles by institutional setting rather than by subject. Appended materials include a listing of the 61 research articles together with the research methodologies used, subject areas covered, and statistical methods, and 13 tables displaying analyses of the data on the core journals used and on the articles studied. (CGD)