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The use of the Delphi survey as a research tool in understa..:

Elkington, Robert L ; Lotter, George
Elkington, R.L. & Lotter, G. 2013. The use of the Delphi survey as a research tool in understanding church trends. Verbum et Ecclesia, 34(1):1-12. [http://www.ve.org.za/index.php/VE].  , 2013