by World Association for Adult Education

1929

by World Association for Adult Education

1924

by World Association for Adult Education

1930

by Institute of World Affairs

1927

by World Association for Adult Education

1919

by World Association for Adult Education

1929

by United States. Congress. House. Committee on World War Veterans' Legislation

1944

by World Federation of Education Associations. Conference, World Federation of Education Associations

1925

by United States. Congress. House. Committee on World War Veterans' Legislation

1944