Columbia subject headings:
Christian antiquities--Italy--Milan.
Christian antiquities--Italy--Rome.
Christian antiquities--Turkey--Istanbul.
Church and state--Rome.
Church history--Primitive and early church, ca. 30-600.
Istanbul (Turkey)--Description and travel.
Milan (Italy)--Description and travel.
Rome (Italy)--Description and travel.
Harvard subject headings:
Christian antiquities--Italy--Milan.
Christian antiquities--Italy--Rome.
Christian antiquities--Turkey--Istanbul.
Church and state--Rome.
Church history--Primitive and early church, ca. 30-600
Istanbul (Turkey)--Description and travel.
Milan (Italy)--Description and travel.
Rome (Italy)--Description and travel.
Princeton subject headings:
Christian antiquities--Italy--Milan.
Christian antiquities--Italy--Rome.
Christian antiquities--Turkey--Istanbul.
Church and state--Rome.
Church history--Primitive and early church, ca. 30-600.
Istanbul (Turkey)--Description and travel.
Milan (Italy)--Description and travel.
Rome (Italy)--Description and travel.