The Worlds of Alfonso the Learned and James the Conqueror : intellect & force in the Middle Ages /
Burns, Robert Ignatius.
University of California, Los Angeles.Center for Medieval and Renaissance Studies.
Princeton, N.J. : Princeton University Press,
c1985.
"Published under the auspices of the Center for Medieval and Renaissance Studies, University of California, Los Angeles."
Includes index
Bibliography: p
Alfonso X, King of Castile and Leon, 1221-1284.
James I, King of Aragon, 1208-1276.