Collins, Roger

Early medieval Europe, 300-1000 Collins, Roger 2010 Early medieval Spain; unity in diversity, 400-1000 Collins, Roger 1983 Early medieval Spain: unity in diversity, 400-1000 Collins, Roger 1983 Keepers of the keys of heaven: a history of the papacy Collins, Roger 2009 The Arab conquest of Spain Collins, Roger 1994 The Arab conquest of Spain 710-797 Collins, Roger 1989