lindahall: Johannes de Sacrobosco – Scientist of the DayJohannes de Sacrobosco, an English cle
lindahall: Johannes de Sacrobosco – Scientist of the DayJohannes de Sacrobosco, an English cleric, astronomer, and teacher, lived in the first half of the 13th century; he was born before 1200 C.E., and died between 1236 and 1256 C.E. read more… -- source link