Field(DCNS('date'), 'created_at'),
Field(DCNS('date.pd'), 'released_to_public_domain_at', as_date, required=False),
- Field(DCNS('publisher'), 'publisher'),
+ Field(DCNS('publisher'), 'publisher', multiple=True),
Field(DCNS('language'), 'language'),
Field(DCNS('description'), 'description', required=False),