Alabi, G.A.(PhD)Wafula, Raymond2022-06-082023-11-182022-06-082023-11-181997-06http://etd.aau.edu.et/handle/12345678/31956This thesis entails a citation analysis study of selected source journals in the pure and applied sciences, in Ethiopia. The basic aim was to determine the communication patterns of scientists in Ethiopia through the documents that they cited in the research articles, over a ten-year period from 1985 to 1994. By employing a selection criteria-based purposive sampling technique, three source jvul'nllirwere selectea namely: Ethiopian Journal of Agncullural SCiences rEJAS)-; Ethiopian Medical Journal (EMJ); and SINET: Ethiopian Journal of Sciences (SINET). Bibliographic data from a total of 4496 citations were processed, analyzed and presented in accordance with the set objectives. dBASE IV, SAS and WordPelfect 5.1 software were thus used Results obtained, showed that the frequency distribution of the age of cited documents, conformed to a type of exponential distribution. It was also found that most of the cited documents (at least 77.34 percent) were published outside Ethiopia, and also at least 74.36 percent of the cited documents comprised primary sources of information. The most prolific and most cited authors were determined as well as the most frequently communicated subjects in each source journal, respectively. Ultimately, several suggestions pertaining to the figure betterment of the observed communication patterns, were posed Possible future roles of the local libraries and information centers supporting S & T research activities in Ethiopia were highlighted, on the basis of the implications of the communication patterns observedenA: Pplied- Sciences in Ethiopia: A Citationof Local JournalsThesis