Promising approaches revisited: effective action on loneliness in later life (Campaign to End Loneliness, 2020) Dokumentu-zerrenda https://www.campaigntoendloneliness.org/wp-content/uploads/Promising_Approaches_Revisited_FULL_REPORT.pdf Xehetasunak Promising approaches revisited: effective action on loneliness in later life (Campaign to End Loneliness, 2020)