De EconomistMay 1964, Volume 112, Issue 5, pp 379–384 | Cite asOverzicht Van Buitenlandse TijdschriftenArticle 6 Downloads This is a preview of subscription content, log in to check access.PreviewUnable to display preview. Download preview PDF.Unable to display preview. Download preview PDF.Copyright information© De Erven F. Bohn N.V. 1964