The Libraries are upgrading to a new library system this summer. Please read this announcement page for library service changes because of it.
BorrowDirect: https://library.columbia.edu/services/request/borrow-direct.html
Loan Periods and Returns: Sixteen (16) weeks and not renewable.
Turnaround Time: The expected time from request to availaibility is 3-5 business days. A business day for the Libraries is Monday to Friday, excluding University Holidays.
Interlibrary Loan: https://library.columbia.edu/services/request/ill.html
Interlibrary Loan vs. Borrow Direct: Which One Should You Use?: https://library.columbia.edu/services/request/ill/ill_vs_borrow_direct.html
If CLIO or FirstSearch version of WorldCat is not available, please try WorldCat.org. WorldCat search engine works better if you can