Handbook on sanitation of dining cars in operation. Standards of sanitation for operation and maintenance of food and drink service facilities on railroad passenger cars. 1951, (Ikke digitaliseret)
Hansen,M.Kjær Den danske trælasthandel. En strukturanalyse af en producentvares afsætningsvilkår. 1951, (Ikke digitaliseret)
Recommendations of the International commission on radiological protection and of the International commission on radiological units 1950. 1951, (Ikke digitaliseret)
Aluminium Laboratories Limited. The abstract bulletin. Kingston,Canada 1951-59. Yol, 22-30 1951, (Ikke digitaliseret)
Fernmeldetechnische Zeitschrift. F.i'.Z. Düsseldorf 1951-54. Jahrg.4-7. Forts.m.tit.:Nachrichtentechnische Zeitschrift, se dette. 1951, (Ikke digitaliseret)
Cedoc-biblio. Pub 1.par Centre Belge de documentation et d'information de la construction. AN (bibliographie analytique). SI (bibli ographie signalétique). 1951, (Ikke digitaliseret)
K.I.W.A. (Keuringsinstituut voor Waterlei-dingartikelen) Summary of the report concerning the investigations into pipes of lead and lead alloys carried out by the "Non-ferrous metals research committee" of the K.I.W.A. 1951. 1951, (Ikke digitaliseret)
Union Géodésique et Géophysique Internationale, Association Internationale d’Hydrologie Scientifique. Assemblée générale de 1951, (Ikke digitaliseret)