prepared for the Council of Europe by J. van Ek ; with appendices by L.G. AlexanderPublished for and on behalf of the Council of Europe by Pergamon Press1980, c1975
prepared for the Council of Europe by J.A. van Ek and L.G. Alexander, in association with M.A. FitzpatrickPublished for and on behalf of the Council of Europe by Pergamon Press1980