. "Overlay drafting systems"@en . . . . _:bnode10authoritiessubjectssh85096200 . _:bnode10authoritiessubjectssh85096200 . _:bnode10authoritiessubjectssh85096200 . _:bnode10authoritiessubjectssh85096200 "Library of Congress, Network Development and MARC Standards Office" . _:bnode10authoritiessubjectssh85096200 "1986-02-11T00:00:00"^^ . _:bnode10authoritiessubjectssh85096200 "new"^^ .