Title: Paul Ali Mehmet Mulla Zade, islamologo di tre papi
Subjects: Correspondence, Christian converts from Islam, Relations, Islam, Catholic Church, Pontificium Institutum Orientalium Studiorum
People: Paul-Mehmet Mulla-Zadé (1881-1959), Louis Massignon (1883-1962), Michel d' Herbigny (1880-1957)