Title: La fórmula
Subjects: Correspondence, Marranos, Schism, The Great Western, 1378-1417, Women scientists, Biography, History
Places: Spain, France
People: Joana de Ça Riera (14th century-15th century), Violent de Ça Riera (14th century-15th century)
Time periods: 15th century, 14th century, 711-1516