An instructional aid for worker students
International Labour Office
Karl Hedderwick
International Labour Office 1987 An instructional aid for worker students . Trade union functions and services
所蔵館2館
Harold Dunning
International Labour Office 1985 An instructional aid for worker students . Trade union functions and services
所蔵館1館
by Curt N. Fernau
International Labour Office 1982 An instructional aid for worker students . Trade union roles and perspectives
by Don H. Taylor
International Labour Office 1981 An instructional aid for worker students . Trade union administration and structures