AccessDeutsch:WDR1978deu - PDF ; English:WDR_1978_English - PDF ; Español:WDR1978spa - PDF ; Français:WDR1978fre - PDF ; العربية:WDR1978ara - PDF ; 日本語:WDR1978jpn - PDF ;
Some vols. accompanied by diskettes. Some vols. have distinctive titles. Each v. has 'Executive summary'; French: 'Abrégé'. Description based on: 1997.
