One of the easiest places you can go to find books relevant to the field of anthropology is a publisher's website, particularly a publishing house tied to a university.
When you search by subject in the catalog look at the subjects listed under the title to see how the topics are being identified. Using those subject headings to search will return a list of results where the topic or subject of the work is the same.
Some possible subject searches to try:
You can choose to browse the stacks for books. The books on the fourth floor are organized by a classification system known as the Library of Congress Classification Scheme. Using this type of a system allows for like items to be grouped together, this means that you can find books on similar topics sitting next to one another on the shelves.
Some potential areas of interest can be find housed in the stacks under the following ranges: