Frontiers -- See Boundaries Here are entered works on lines demarcating the jurisdictional borders between countries, regions, states, etc. in general. Works on lines demarcating the jurisdictional borders between specific regions, countries, etc., are entered under the name of the place with the subdivision Boundaries. Works on the lines demarcating the jurisdictional borders between two countries, etc., are entered under the name of each country with the subdivision Boundaries--[other country], e.g. United States--Boundaries--Mexico; Mexico--Boundaries--United States. Works on the land located on or near the boundaries between two countries, regions, states, etc. are entered under Borderlands. --subdivision Boundaries under names of countries, states, etc.; and subdivision Territorial questions under individual wars, e.g. World War, 1939-1945--Territorial questions
Frsad Conceptual Model -- See Also Subject headings Here are entered general works on subject headings and lists of subject headings in the English language. This heading may be further subdivided by subject, e.g. Subject headings--Aeronautics.