victor Leiva

100 years since the discovery of Onchocerciasis

100 años del descubrimiento de la Oncocercosis
Ownervictor Leiva
ObservationsIssue: 100,000 units
CountryGuatemala
Colection
Face valueQ. 6.50
Year2015
StateNew
StatusExhibition - Non-transferable
CategoryScience
FormatVertical
PrinterT.N.G.A.
Other informationPerforated stamp
visualizations323