. . "Social planning : sources of information : proceedings of a one day conference held at the Library Association, London, 29th October, 1974"@en . . . . . . . . . . . . . "Social planning, sources of information : proceedings of a one day conference held at the Library Association, London, 29th Ocotober, 1974 [organized by] Aslib Transport and Planning Group [and the] Library Association Reference, Special and Information Section, edited by Lesley Grayson"@en . . . . "Conference papers and proceedings" . . . "Social planning, sources of information : proceedings of a one day conference held at the Library Association, London, 29th October, 1974 [organised by] Aslib Transport and Planning Group [and the] Library Association Reference, Special and Information Section" . . . "Conference on Social Planning Sources of Information (1974 : London)" . . .