opinion polls
type: Concept
broader: research
in scheme: conceptscheme
preferred label: mielipidetutkimus @fi
preferred label: opinionsundersökning @sv
related: interview study
related: questionnaire study

questionnaire study
type: Concept
preferred label: enkätundersökning @sv
preferred label: kyselytutkimus @fi
related: opinion polls

interview study
type: Concept
preferred label: intervjuundersökning @sv
preferred label: haastattelututkimus @fi
related: opinion polls

research
type: Concept
narrower: opinion polls
preferred label: forskning @sv
preferred label: tutkimus @fi