. "Envelopes (Geometry)"@en . . . . . . . _:bnode13authoritiessubjectssh85044159 . _:bnode13authoritiessubjectssh85044159 . _:bnode13authoritiessubjectssh85044159 . _:bnode13authoritiessubjectssh85044159 "Library of Congress, Network Development and MARC Standards Office" . _:bnode13authoritiessubjectssh85044159 "1986-02-11T00:00:00"^^ . _:bnode13authoritiessubjectssh85044159 "new"^^ .