There are many resources to use to find books at UCSD, as well as the broader San Diego, California, and Global Community. A useful strategy is to begin with UC Library Search to search for books available throughout the University of California System. Because it draws from UC records broadly, this approach allows you to expand out to other UC libraries, or to drill down to just UCSD by selecting "Search UCSD." Alternatively, you can use CIRCUIT to do a San Diego-specific library search. Other resources, including HaithiTrust, Cibera, and the Handbook of Latin American Studies provide additional citations. Beginning with UC Library Search and then expanding to broader searches or narrowing to more narrow ones is a useful strategy because the interface includes faceting, which helps you to narrow down the results of your search by format, subject, or other criteria.
HathiTrust Digital Library is a digital preservation repository and an access platform. It provides long-term preservation and access services for public domain and copyrighted content from a variety of sources, including Google, the Internet Archive, Microsoft, and in-house partner institution initiatives. Content is full-text searchable; most items published before 1923 are full-text viewable and downloadable.