Author: "Erp Ring

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Research papers

Identification of persons with the potential for setting up their own business (German)

Catalogue: ESOMAR Congress 1981: Research For Profitability
Company: Institut für Demoskopie Allensbach GmbH
Date: August 23, 1981
Authors: Elisabeth Noelle-Neumann, Erp Ring

Research papers

Identification of persons with the potential for setting up their own business

Catalogue: ESOMAR Congress 1981: Research For Profitability
Company: Institut für Demoskopie Allensbach GmbH
Date: August 23, 1981
Authors: Elisabeth Noelle-Neumann, Erp Ring

Research papers

Questionnaire monotony endangers the comparability of results

Catalogue: ESOMAR Congress 1976: Research That Works For Today's Marketing Problems
Company: Institut für Demoskopie Allensbach GmbH
Date: September 5, 1976
Author: Erp Ring

Research papers

Questionnaire monotony endangers the comparability of results (German)

Catalogue: ESOMAR Congress 1976: Research That Works For Today's Marketing Problems
Company: Institut für Demoskopie Allensbach GmbH
Date: June 15, 1976
Author: Erp Ring

Research papers

Is the tree-test applicable as auxiliary mean for poll-research?

Catalogue: ESOMAR/WAPOR Conference 1963
Company: Institut für Demoskopie Allensbach GmbH
Date: June 15, 1963
Author: Erp Ring