This notion of discourse communities will help you understand some of the varieties of language and search vocabularies used in various search tools as you do your own research. In real life, this means that agricultural economists share certain conventions relating to the study of economics in general, and to agricultural economics in particular. Nevertheless, we can identify key concepts and terminology which most economic scholars would recognize and understand in communications. The various academic disciplines employ a wide variety of other information gathering strategies and techniques, in addition to the informal invisible college. Historians find archival materials such as letters, journals, newspapers, and photographs crucial for their research.
Geologists analyze earth samples.
Political scientists use published opinion polls, census records, published interviews with politicians, and case studies of elections in their research. Literary scholars may study original manuscripts of their target author. Psychologists may conduct experiments to further our understanding of the various aspects of psychology.