For more details about finding eBooks at Berkeley check out this guide:
UC Library Search (UC Berkeley and all UC campuses)
UC Library Search is the catalog for all ten UC campus libraries, including UC Berkeley, NRLF and SRLF. Log in to UC Library Search to see your library account, make requests, renew books, or initiate an interlibrary loan.
WorldCat (libraries worldwide)
Worldcat is a library catalog for materials owned by libraries worldwide. UC Berkeley faculty, staff, and students may request materials not owned by UC Berkeley.