•Searches only for the words, not the concepts.
•Is often the best search to do initially, until you know what the Subject terms are.
•Can be used in conjunction with an outline to conceptualize a topic.
•Searches the concept (as defined by the Library of Congress Subject Headings)
•Is often better done when the keyword search isn't garnering material appropriate to the topic.
•May take more work, but will yield better results than a keyword search.
Other catalgos allow one to find material not owned by CSUS.