Library science is basically the study of how to operate a library. The field is made up of several branches, including public services, technical services and administration. It is referred to as “library and information science” at many colleges and universities because librarians work with physical books as well as virtual information. Library science (often termed library studies or library and information science) is an interdisciplinary or multidisciplinary field that applies the practices, perspectives, and tools of management, information technology, education, and other areas to libraries; the collection, organization, preservation, and dissemination of information resources; and the political economy of information. The first American school for library science was founded by Melvil Dewey at Columbia University in 1887.