Here are entered works dealing with communities established in space or on natural extraterrestrial bodies. Works dealing with manned installations existing for specific functions on natural extraterrestrial bodies are entered under Extraterrestrial bases. Works dealing with manned installations existing for specific functions, such as servicing space ships, etc., in orbit around the earth or other natural extraterrestrial bodies are entered under Space stations.
Here are entered works on Web services, such as Facebook, Twitter, etc., that enable people to meet, interact with, and develop personal relationships with others.
--subdivision Political activity under names of individual persons, corporate bodies, and families; and under classes of persons, types of industries and corporate bodies, military services, and Christian denominations, e.g. Construction industry--Political activity; United States--Armed Forces--Political activity; Catholic Church--Political activity; and subdivision Citizen participation under headings designating government activities, e.g. Crime prevention--Citizen participation
