Note 228 — Chapter IV · ITALY.
Reading edition
Greg. PP. IX. Bull. Ille humani generis, 20 Maii, 1230 (Ripoll I. 95. gives this in 1237, probably a reissue).--Epistt. Sæcul. XIII. T. I. No. 693, 700, 702, 704.--Hist. Diplom. Frid. II. T. IV. P. II. pp. 907-8.--Schmidt, Cathares, I. 161.