CLIO is the library catalog for the Columbia Library System (including Barnard Library, but excluding Teachers College and some information from the Law Library). In CLIO you can find books and media materials, search for different kinds of databases, and find articles within those databases as well.
This is the catalog of the Columbia Law Library - you can search here directly. You can find law library materials in CLIO, but you need to click on the link to Pegasus to see if the book is available for you to check out.
Teachers College Library has a fantastic collections of materials of education. Search the Teachers College Library catalog, Educat. Teachers College materials are not shown in CLIO. Teachers College is on West 120th Street between Broadway and Amsterdam Avenue.
If a title isn't available via Columbia University Libraries, you may request it via Borrow Direct or Interlibrary Loan (ILL). Try Borrow Direct first for books - the delivery faster and you can check books out for a longer period of time.