Henry Cornelius Agrippa's Fourth book of occult philosophy, and geomancy. Magical elements of Peter de Abano. Astronomical geomancy [by Gerardus Cremonensis]. The nature of spirits [by Gorg Pictorius]. And arbatel of magic
Petrus, de Abano, ca. 1250-ca. 1315. Heptameron, or Magical elements; Gherardo, da Cremona, 1113 or 14-1187. Astronomical geomancy; Pictorius, Georg, ca. 1500-1569. Isagage: the nature of spirits