10 results
Results are displayed by relevance.
Welsh: astudiaeth hydredol
English: longitudinal study
Welsh: sampl hydredol
English: longitudinal sample
Welsh: arolwg hydredol
English: longitudinal survey
Welsh: ymchwil hydredol
English: longitudinal research
English: Centre for Longitudinal Studies
English: CLS
Welsh: ymchwil ansoddol hydredol
English: longitudinal qualitative research
English: National Longitudinal Survey of Youth
English: NLSY
English: Longitudinal Small Business Survey