Public libraries serve most cities and towns in an extensive network. The National Archives and a public library (78,000 volumes) are both located in Windhoek, as is the National Library, which contains 69,000 volumes as of 2002. The University of Namibia at Windhoek holds 86,800 volumes. There is a national museum in Windhoek, with an emphasis on the natural and human sciences, and local museums in Lüderitz, Swakopmund, Gobabis, Omaruri, Outjo, Tsumeb, and other towns. The State Museum in Windhoek features objects from the cultures of the Nama, Bushman, Herero, Ovambo and other Southern African peoples. The Lüderitz Museum features displays of diamond mining.