?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Bryson&rft.au=Bryson%2C+A&rft.aufirst=A&rft.title=British+Journal+of+Industrial+Relations&rft.atitle=The+Persistence+of+Union+Membership+in+the+Coalfields+of+Britain&rft.date=2021&rft.genre=article