| title | ISBN-13 | year of publication |
|---|---|---|
| Fitting research to turbulent times: Vienna, 29th August-2nd September 1982 | 978-92-831-0082-9 | 1982 |
| Market Research Best Practice: 30 Visions for the Future | 978-0-470-06527-3 | 2007 |
| Market Research Handbook | 978-0-470-51768-0 | 2007 |
| Research for decision making , Oslo, 28th August-1st September, 1977 | 978-92-831-0045-4 | 1977 |
| Research for profitability: 34th E.S.O.M.A.R. Congress, Amsterdam, 23-27 August 1981 | 978-92-831-0072-0 | 1981 |
| "Taking stock, what have we learned and where are we going?": Monte-Carlo, 14th-18th September 1980 = "Faisons le point, qu'avons-nous appris jusqu'ici et vers quoi allons-nous?" | 978-92-831-0067-6 | 1980 |
| The challenge of the eighties =: Le défi des années 80: Esomar Congress, Brussels, 2d-6th September 1979 | 978-92-831-0059-1 | 1979 |
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