by International Federation for Housing and Planning. Congress

1929

by International Federation for Housing and Planning

1928

by International federation for housing and planning. Congress

1926

by International Federation for Housing and Planning. 12th congress, Rome

1929

by International federation for housing and planning. Congress

1926

by International Garden Cities Town-Planning Association. Conference

1922

by International federation for housing and planning. Congress

1924

by International Council of Women

1930

by International Co-operative Alliance

1911

by International Labour Office

1930

by United States. Dept. of Housing and Urban Development. Office of International Affairs

1970

by Institute of International Education (New York, N.Y.)

1930