"Revolutions: Spain" is a part of a series of 6 booklets on revolutionary history, which you can purchase here for $25. This series on what a revolution looks like can be read in any order and includes:

• Russia: 1905 & 1917
• Germany: 1918-23
• China: 1925-27 & 1949
• Spain: 1931-37
• France: May 1968
• Chile: 1973

This booklet includes the following articles in addition to a glossary and timeline of events:

• "The Spanish Revolution 1931–1937" by Ted Grant 
• "The Lessons of Spain: The Last Warning" by Leon Trotsky