Convention of Madrid
Subtitle: (30 November 1920)
Contributors: Great Britain. Post Office; International Postal Congress, 7th, Madrid, 1920
Publisher: H.M.S.O.
Published: 1921
Place of publication: London
Language: eng
Number of pages: 31
Subjects: Postal service
Notes: (Cmd. 1537)

At head of title: Universal Postal Union.

French and English texts in parallel columns.  (English translation and Table of Contents added in London)