Soggetto
- Johns Hopkins Hospital1
- Johns Hopkins Hospital. Library1
- Josselin de Jong, R. de1
- Kantorek, R.1
- Kelly, Howard A. (Howard Atwood), 1858-19431
- Klarek, Bruno S.1
- Kokk, Astrid1
- Kokk, Heino1
- Korner, Eugen1
- Krauss, Eduard1
- Kreyenberg, G.1
- Laboratories.1
- Lang, J.1
- Larmande, A.1
- Laszlo, Kadar1
- Laurand1
- Lerperger, Oskar1
- Letoublon1
- Libusehuz, Robert1
- Lizins, Laimonis1