Structural shells -- See Shells (Engineering) Here are entered works on shells as engineering structures. Works on the mathematical theories of elasticity in plates and shells are entered under Elastic plates and shells. Works on plates as engineering structures are entered under Plates (Engineering).
Structure, Family -- See Families Here are entered works on the sociological concept and structure of families as well as works on the everyday life, interactions, and relationships of family members. --subdivision Family under names of individual persons; and subdivision Family relationships under classes of persons
Structured vocabularies (Subject headings) -- See 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.
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Structures -- See Buildings 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
