Dr. Robert Koch on american postage stamp

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Size: 3243px × 5383px
Photo credit: © Peregrine / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: artwork, canceled, collection, communication, correspondence, disease, envelope, illness, koch, letter, mail, medicine, microbe, microorganism, object, paper, philatelic, philately, post, postage, postal, postcard, postmark, research, researcher, robert, science, scientist, stamp, study, tubercolosis, vaccine