books.google.co.uk - Impurity of Blood analyzes the proposition of Spanish racial thought in the late 19th and early 20th centuries that racial strength came from a fusion of different groups, rather than from a kind of racial purity. By providing a history of ethnic thought in Spain in the medieval and early modern era,...http://books.google.co.uk/books/about/Impurity_of_Blood.html?id=07sb6V7usRoC&utm_source=gb-gplus-shareImpurity of Blood