--subdivision Power supply under types of buildings, installations, equipment, industries, etc., e.g. Aeronautics--Communication systems--Power supply; Construction industry--Power supply
Here are entered general works on the conservation of all forms of energy. Works on the conservation of energy as a physical concept are entered under Force and energy. --subdivision Energy conservation under types of industries, facilities, etc., e.g. Construction industry--Energy conservation
--subdivision Energy consumption under military services, types of industries and topical headings, e.g. Agriculture--Energy consumption; Construction industry--Energy consumption; Dwellings--Energy consumption; and subdivision Fuel consumption under types of machinery, land vehicles, etc., e.g. Agricultural machinery--Fuel consumption; Automobiles--Fuel consumption
Here are entered works dealing generally with facilities and plants for the generation, conversion, storage, and transportation of energy and related operations. Works dealing with individual types of facilities are entered under specific headings, e.g. Electric power-plants; Petroleum pipelines.
--subdivision Fuel under military services, e.g. United States. Navy--Fuel; subdivision Fuel supplies under wars, e.g. World War, 1939-1945--Fuel supplies; and subdivisions Fuel, Fuel consumption and Fuel systems under equipment, e.g. Jet planes--Fuel; Steam-boilers--Fuel consumption; Automobiles--Fuel systems