dc: http://purl.org/dc/elements/1.1/
dct: http://purl.org/dc/terms/
bibo: http://purl.org/ontology/bibo/
daia: http://purl.org/ontology/daia/
frbr: http://purl.org/vocab/frbr/core#
isbd: http://iflastandards.info/ns/isbd/elements/
gn: http://www.geonames.org/ontology#
lv: http://purl.org/lobid/lv#
marcrel: http://id.loc.gov/vocabulary/relators/
rdf: http://www.w3.org/1999/02/22-rdf-syntax-ns#
owl: http://www.w3.org/2002/07/owl#
geo: http://www.w3.org/2003/01/geo/wgs84_pos#
foaf: http://xmlns.com/foaf/0.1/