Railroads in the U.S.A. Report by a group of European experts. [Part 1-2]. 1951, (Ikke digitaliseret)
Materials siirvey. Compiled by the United States department of the interior. Bureau of mines. [Vol.l-fr], [Washington],[U.S.gov. print.off.J,1951-53. [Maskinskrevet] 1951, (Ikke digitaliseret)
Electric eyes. A concise and elementary description of the photo-electric cell, for the non-technical reader: its uses in industry, and its uses and short-comings in colorimetry. 1951, Fawcett, A.J., (Ikke digitaliseret)
Vattnet i farozonen. Vattenfrågans läge i Sverige. [Stockholm,IVA's. Vattenkommitté, u.å. [ca.1951l. 1951, (Ikke digitaliseret)
Origin-destination surveys and traffic volume studies. Part 1-2. 1951, Barkley, R.E., (Ikke digitaliseret)
The mechanisation of small farms in European countries. Report of the agricultural machinery sub-committee of the OoEoE.Co 1951, (Ikke digitaliseret)
Dezimal-Klassifikation. Deutsche Gesamtausgabe. 3.int.Ausgabe. Lief. 8-10:Alphabetisches Sachverzeichnis. 1951, (Ikke digitaliseret)
Servigne,M., P.Guérin de Montgareuil et M.Pinta Praetionnement chromatographique et dosage de la vitamine A. 1951, (Ikke digitaliseret)
Gyldendals verdensatlas. [Udg.af] Gyldendalske boghandel i samarbejde med Touring club italiano,Milano. Mordisk red.:A.Aagesen o.a. 1951, (Ikke digitaliseret)