Transkription:
NORDENGREN, Sven [Gunnar
Se: Ingenlörsvetenskapsakademiens handlingar.
Teknol.
Inst
[Stocketolm
203. The double superphosphate and wet phosphoric acid processes... 1949.
206. Studles on the production of strong phosphoric acid according to the
wet anhydrite process. 1951.