WorldCat (short for World Catalog) lists library holdings from over 10,000 libraries around the world. From here, you will be able to see everything IFPRI provides access (both in print and online), as well as things that IFPRI does not provide access but can obtain for you via Interlibrary Loan. Worldcat is best used as a companion tool to one of the other databases (CAB, EconLit, Google Scholar, Web of Science).