Description
Published:1952-1956
Item Description:Title from cover.
Physical Description:volumes : illustrations ; 22 cm
Related Items:Includes also an abridged edition with title: 1952-1954, Report (abridged) to the annual general meeting by the Board of Directors (cover title: Annual report (abridged)); 1955-1956, Administrative report to the annual general meeting by the Board of Directors (cover title: Annual administrative report).