 Yale's facilities for research and study include a university library system of nearly fifteen million volumes, the Beinecke Rare Book and Manuscript Library, the Yale University Art Gallery, the Yale Center for British Art, the Office of Information Technology Services, departmental libraries and collections, and the extensive resources of the professional schools.The collections and services of the Research Libraries Group, which consists of Columbia, Harvard, and Yale universities and the New York Public Library, are also available to students.Special research facilities for the sciences are clustered on Science Hill, including the Bass Center for Molecular and Structural Biology, Josiah Willard Gibbs Research Laboratories, Kline Geology Laboratory, Sterling Chemistry Laboratory, Kline Biology Tower, the Class of 1954 Environmental Science Center, the Peabody Museum of Natural History, and the Arthur W. Wright Nuclear Structure Laboratory.