Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Originally published in English in 1964, this book threw new light on the positive value and significance of the Middle Ages. It discusses Constantine and the triumph of Christianity; the clash between the German tribes and Roman civilization; the final bids for power and the final crisis of the medieval world.