Fach
- Klarek, Bruno S.1
- Kokk, Astrid1
- Kokk, Heino1
- Korner, Eugen1
- Krauss, Eduard1
- Kreyenberg, G.1
- Kymograph1
- Lang, J.1
- Larmande, A.1
- Laszlo, Kadar1
- Laszlo, Petrikovits1
- Laurand1
- Lerperger, Oskar1
- Letoublon1
- Libusehuz, Robert1
- Lizins, Laimonis1
- Marino, [Livinio] Alb.1
- Maskoba, B. M.1
- Massachusetts General Hospital1
- Mayo Clinic. Library1