TY - JOUR T1 - The Union Membership Wage-Premium Puzzle: Is There a Free Rider Problem? JO - ILR Review PY - 2004/04/01 AU - Booth AL AU - Bryan ML ED - DO - DOI: 10.1177/001979390405700305 PB - SAGE Publications VL - 57 IS - 3 SP - 402 EP - 421 Y2 - 2025/04/09 ER -