Editorial.

The article reports on the 2nd International Conference on Production Research held in the Technical University of Denmark at Copenhagen in August 1973. The event was organized by professor C. H. Gudnason and his colleagues at the Technical University. The International Journal of Production Research has decided to publish a selection of papers presented at the conference. They will appear in the next two issues of the journal. It has been tentatively proposed that the 3rd Conference should be held in the U.S. in 1975.