Zur Viskosimetrie. Anhangs Umwandlungs-Tabellen für Viskositätszahlen. 1944, Ubbelohde, L., (Ikke digitaliseret)
The stereometrical theory of the structure of atoms. Atoms of various elements ... The periodic system of the human speech sounds. Lincoln,Nebr. 1944. 1944, Frankford, J., (Ikke digitaliseret)