Reference activity takes place in many other parts of the Libraries. Reference cooperates with these units in terms of services, but those areas almost always are responsible for their own collections (if any). These other units include Circulation, Distance Learning Services (refmo on rare occasions buys a few reference books for DLS use), Africana, LIR, Turfgrass, Maps, Fine Arts/Music, Special Collections, and the external branch libraries. The Writing Center has a satellite center in the Main Library. The MSU College of Law has a library but is a separate institution.