. _:b2556528 . _:b2556528 . _:b2556164 . _:b2556164 . "Series"@en . _:b2556164 . _:b2556505 . _:b2556505 . _:b2556505 . _:b2556505 . "stable" . "http://purl.org/ontology/bibo/"^^ . . _:b2556528 . . "A loose, thematic, collection of Documents, often Books."@en . _:b2556505 . _:b2556528 . _:b2556164 .