Research reports are reports regarding research and development projects. These are primitive form of literature because these are produced earlier in a research programme. Often these take the form of progress reports which serve as temporary reference. Due to the inadequacies of the periodicals, research report issued as separate documents often a successful alternative. These form vital part of primary sources especially in the area of aeronautics and applied atomic energy. This kind of literature is often called ‘unpublished’ or ‘semi-published’ literature because normally these are not available through regular book trade channels but are made available to interested parties under certain kind of control.
- Scientific and technical aerospace report, National Aeronautics and Space Administration (NASA).
- Government Reports, Announcements & index (GRA&I).