Zapf, W. (2000): Social Reporting in the 1970s and in the 1990s. In: Social Indicators Research 51, 1, 1-15. https:// doi.org/10.1023/A:1006997731263
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Zapf, Wolfgang (2000): Social Reporting in the 1970s and the 1990s. In: Social Indicators Research 51, 2000, p. 1-15.
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Zapf, Wolfgang: 2000, 'Social Reporting in the 1970s and the 1990s', Social Indicators Research 51(1), pp. 1-15.
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