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1Published 1971.“…Groningen University,…”
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2
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3Published 1973.“…State University of Groningen [etc.],…”
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4Published 1976.“…State University of Groningen [etc.],…”
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5Published 1976.“…State University of Groningen [etc.],…”
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6Published 1975.“…State University of Groningen [etc.],…”
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7Published 1976.“…State University of Groningen : Faculty of Economics,…”
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8Published 1993“…Dept. of Chemistry, State University of Groningen,…”
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9Published 1976.“…State University of Groningen : Faculty of Economics,…”
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10Published 1976.“…State University of Groningen, Faculty of Economics, Faculty Research Group in Socio-Economic History,…”
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