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helmeted hornbill
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Helminthostachys zeylanica
Helmholtz
Short desc: Helmholtz
Things in this design:
person
Helmholtz
(syn. of
Hermann von Helmholtz
)
This design is used by 1 stamp:
German Democratic Republic 7/10/1950 10pf dkgraygrn dt=scientists (1950) wmk=mult flowers
