Regional information and regional planning in Africa /
by Ralph von Gersdorff.
APA Citation
Gersdorff, R. von., United Nations Research Institute for Social Development. (1971). Regional information and regional planning in Africa. [Geneva?]: [United Nations Research Institute for Social Development].
MLA Citation
Gersdorff, Ralph von, and United Nations Research Institute for Social Development. Regional Information And Regional Planning In Africa. [Geneva?]: [United Nations Research Institute for Social Development], 1971.
Warning: These citations may not always be complete (especially for serials).