Roken? [Bethesda, Md. : Medical Arts and Photography Branch, National Institutes of Health, 19--?] National Institutes of Health (U.S.). Medical Arts and Photography Branch. Posters Still image 1 photomechanical print (poster) color nlm:nlmuid-101455282-img 101455282 http://resource.nlm.nih.gov/101455282 IHM: C01611 Dutch This item may be under copyright protection. Please ask copyright owner for permission before publishing.