Here are entered works on Orthodox Eastern denominations treated collectively and works for which the individual Orthodox denomination cannot be identified. Works on individual Orthodox denominations are entered under the name of the denomination.
Here are entered works on the region extending from the western borders of Poland, the Czech Republic, Slovakia, Hungary, and Slovenia eastward to the Ural Mountains, and sometimes expanded to include East Germany. Works on the area included in the basins of the Danube, Elbe, and Rhine rivers are entered under Europe, Central.
Here are entered works on the region consisting of Asia west of Pakistan, northeastern Africa, and occasionally Greece, Pakistan, and Afghanistan. Works treating collectively the Arabic-speaking countries of Asia and Africa, or of Asia only, are entered under Arab countries.