TY - GEN T1 - Comparative Study of the Use of Social Identity Cards in the Construction Sector in Various European Countries UR - http://dx.doi.org/10.2139/ssrn.4002311 PY - 2022/01/01 AU - Williams C ED - DO - DOI: 10.2139/ssrn.4002311 Y2 - 2025/07/12 ER -