Focus on Forgeries : A Guide to Forgeries of Common Stamps /

Eitemau Tebyg

• Características de algunas falsificaciones de timbres de México /
  gan: Liera Gutiérrez, Roberto
• A Guide to Stamp Collecting : America's favorite family hobby /
  gan: Holden Thorp, Prescott
• Guía del filatelista /
  gan: Legnar, E. Doctor
• The Story of Fluorescence : An explanation of ultraviolet fluorescence with experiments and a descriptive list of fluorescent minerals. /
  gan: Wain, Harry C.
• Catálogo Filatélico CFTmex Timbres Mexicanos 1856-2008 : 152 años del timbre postal mexicano /
  gan: .