ILC, 1st Session, 1919
ILC, 1st Session, 1919
ILC, 1st Session, 1919
ILC, 1st Session, 1919
ILC, 1st Session, 1919
ILC, 2nd Session, 1920
Report on the subject, questionnaire and replies of Member States
ILC, 2nd Session, 1920
ILC, 3rd Session, 1921
ILC, 3rd Session, 1921