R. HOFFMANN, Die Gestaltung der Verkehrswegenetze (Book Review) - Bartels, D. (Periodicals Archive Online (PAO), 1963)
http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:h092-1963-051-03-000006
Keywords: R