In the Milstein Center for Teaching and Learning, the library and our collection of 150,000 books are housed on on the 2nd, 3rd and 4th floors.
Browsing the stacks to find books can be a good way of finding sources. Most of the libraries in the Columbia system use Library of Congress (LC) call numbers. A book's call number is based on the first subject heading listed in the book record in the CLIO Catalog.
Each library has a call number guide to tell you where each call number is located, which is shown in the CLIO Catalog and displayed in the library.
These are the LC call numbers for astronomy and physics: