Here are entered general works on subject headings and lists of subject headings in the English language. This heading may be further subdivided by the topic of the subject headings, e.g., Subject headings--Aeronautics.
Here are entered general works on structures or edifices. Works on the design and style of structures are entered under Architecture. Works on the process of construction are entered under Building. --subdivision Buildings under names of individual exhibitions and corporate bodies; and names of individual buildings
--specific kinds of structures, e.g. Bridges; Buildings; specific structural forms, e.g. Girders; Plates (Engineering); and specific systems of construction, e.g. Building, Iron and steel; Concrete construction
