A WEP study
International Labour Office
Graham Pyatt and Erik Thorbecke ; foreword by Louis Emmerij
International Labour Office 1976 A WEP study
pbk.
所蔵館11館
H. F. Lydall
International Labour Office 1975 A WEP study
: pbk
所蔵館25館
Yves Sabolo ; assisted by Jacques Gaude and René Wéry
: hardback , : pbk
所蔵館13館
Bohuslav Herman
: pbk , : hard
Harold Lubell ; foreword by J. Tinbergen
International Labour Office 1974 A WEP study
所蔵館12館
所蔵館28館