Go to the library catalog.
There is also a search box for the the campus libraries' Catalog on the EHSL home page. It is located on the center of the main page.
Enter the information you know about the book in the search box.
After you click search, use the options in the left hand column to Refine your Search by location.
If HSL does not own the book you can request it from another library using the Interlibrary Loan online form.