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Tafeln zur Ermittlung der Härtezahlen nach Brinell. Berlin,Beuth-Verlag,u.ä. 1930, (Ikke digitaliseret)
Studies in the detergent action and surface activity of soap solutions. 154 [Med bill. ] København DTH Piss.19/2 1930, 1930, Madsen, T., (Ikke digitaliseret)
Studies in the detergent action and surface activity of soap solutions. 1930, Madsen, T., (Ikke digitaliseret)
Deutsche Kühltechnik im Haushalt, Stuttgart ,Vittwer,1930, 102 s. 1930, Stetefeld, R., (Ikke digitaliseret)
Br aun-Fe1dw eg,W. Metall. Werkformen und Arbeitsweisen. Ein Fachbuch für viele Berufe handwerklicher und industrieller Metallarbeit. 1930, (Ikke digitaliseret)
Standards and specifications for nonmetal-lic minerals and their products. Wash.1930. 1930, (Ikke digitaliseret)
New International Association for the Testing of Materials First communications. Group A-D. Ziirich 19300. (I 4 bd.) 1930, (Ikke digitaliseret)
Oelmotoren in Vier- und Zweitakthau-art. Entwurf, Berechnung und Bau, 4.Auf3. 1930, (Ikke digitaliseret)
Elektrotechnischer Verein, Zur Erinnerung an das goldene Jubiläum des Elektrotechnischen Vereins. 1930, (Ikke digitaliseret)
Rensselaer polytechnic institute, Troy. Department of architecture. Department of civil engineering. Department of electrical engineering. Catalogue. (3 piecer om institutets historie og interne forhold). Troy, N.Y.1930. Rensselaer polyt^^ institute. Eng. and sc ser.29,32,45. Skolepubl. 1930, (Ikke digitaliseret)