H. Pirenne (Pirenne, H.)

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  Medieval Cities: Their Origins and the Revival of Trade
  by H. Pirenne
  Hardcover, Princeton Univ Pr, ISBN 0691051763 (0-691-05176-3)
• 
  Mohammed and Charlemagne
  by H. Pirenne
  Softcover, Dover Pubns, ISBN 0486420116 (0-486-42011-6)

  More editions of Mohammed and Charlemagne:

  • Mohammed and Charlemagne: Hardcover, Rowman & Littlefield Pub Inc, ISBN 0389201340 (0-389-20134-0)