Renaissance and renewal in the twelfth century /
Benson, Robert L.(Robert Louis),1925-
Constable, Giles,1929-
Lanham, Carol D.(Carol Dana)
Haskins, Charles Homer,1870-1937.
University of California, Los Angeles.Center for Medieval and Renaissance Studies.
Harvard University.Committee on Medieval Studies.
Oxford Clarendon
1982
Includes bibliographies and index
Civilization, Medieval