. "Calculus of variations"@en . _:bnode7authoritiessubjectssh85018809 . _:bnode7authoritiessubjectssh85018809 . _:bnode7authoritiessubjectssh85018809 "Isoperimetrical problems"@en . _:bnode12authoritiessubjectssh85018809 . _:bnode12authoritiessubjectssh85018809 . _:bnode12authoritiessubjectssh85018809 "Variations, Calculus of"@en . . . . . . . . . . . . . . . . . . . . . . . "Isoperimetrical problems"@en . "Variations, Calculus of"@en . _:bnode43authoritiessubjectssh85018809 . _:bnode43authoritiessubjectssh85018809 . _:bnode43authoritiessubjectssh85018809 . _:bnode43authoritiessubjectssh85018809 "Library of Congress, Network Development and MARC Standards Office" . _:bnode43authoritiessubjectssh85018809 "1986-02-11T00:00:00"^^ . _:bnode43authoritiessubjectssh85018809 "new"^^ . _:bnode52authoritiessubjectssh85018809 . _:bnode52authoritiessubjectssh85018809 . _:bnode52authoritiessubjectssh85018809 . _:bnode52authoritiessubjectssh85018809 "Library of Congress, Network Development and MARC Standards Office" . _:bnode52authoritiessubjectssh85018809 "2011-05-18T08:58:55"^^ . _:bnode52authoritiessubjectssh85018809 "revised"^^ .