Pedro Gruenholz

II Congress on learning difficulties

II Congreso de dificultades en el aprendizaje
OwnerPedro Gruenholz
CountryMexico
Face value20 c
Measures4x2,4 cms
Year1974
StateUsed
StatusExhibition - Non-transferable
CategoryEvents
FormatVertical
Other informationPerforated stamp
visualizations430