When used with caution, the open web can be a useful source of definitions and keywords --
Think of words or phrases that best describe the topic you are searching. It is important to remember that individual authors might use different language to describe a topic. Concepts can be identified using various words so it is helpful to come up with synonyms or related terms, as well.
The drawback of using natural language or keywords is that the entire bibliographic record is searched. Because of this results will vary and may be unrelated to the topic.
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