Bibliography
- Jean-Pierre Mangin, Guide mondial des timbres erronés. Errors on stamps, ed. Yvert, Amiens ; book 1, 1999, ISBN 2-86814-105-6 ; book 2, 2005. Bilingual books (English and French).
- D.E.G. Irvine and M. Seshold, Errors in Postage Stamp Design Published by National Philatelic Society, 1979, ISBN 0-906291-01-1
Read more about this topic: Postage Stamp Design Error
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