De volgende 200 jaar : scenario voor de toekomst van Amerika en de wereld / Herman Kahn, William Brown, Leon Martel ; [vert. uit het Engels: M.R. de Jong]Trade union policy and trade union structure in England and the Netherlands : report of the 2-day workshop, held at Leiden, 1st and 29th of November, 1979 / [contributors:] Eric Batstone [and] William Brown ; short commentary papers were delivered by: Frans Leynse ... [et al.] ; organized by Frans Leynse and Bert van Hees