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A literature review is a systematic and critical examination of the existing knowledge, research studies, theories, concepts, and findings related to a particular research topic. It is an important part of research methodology because it helps the researcher understand what has already been studied, what is currently known, and what areas still require further investigation. A literature review is not simply a summary of different books and articles; it involves analysing, comparing, and evaluating previous research. The first purpose of a literature review is to develop a clear understanding _________ _______ ______ ____ _________ _____ _________ _______ ________ _______ _________ _________.
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