Library of Congress call numbers group books by topic. One example of browsing the collection by call number: Media & Visual Culture Studies is multi-disciplinary and interdisciplinary, there is no one call number range that covers all materials pertaining to Visual & Media Studies. The following are some you might find useful.
Explore the full range of the Library of Congress Classification.
You might be interested in critiques of the limits of Library of Congress Classification as well:
Boolean Operators: AND, OR, NOT and Other Symbols for More Effective Searching
theat* AND (classical OR antiquity)=Using the AND operater narrows your search to only results that mention both keywords. Use the OR operator to search for variants or synonyms of the same keyword. The asterisk (*) is a wildcard symbol that is used to catch variant endings of a word (individuality, individualism, as well as individual).
“trojan women” AND motherhood=Use quotation marks to search for a specific phrase.