| 21. | It has a Roud Folk Song Index number of 12824.
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| 22. | Negative price index numbers indicate more companies project falling prices.
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| 23. | Daniel Wildenstein established the Wildenstein Index Number used by the Institute to identify paintings.
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| 24. | It has a Roud Folk Song Index number of 502.
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| 25. | It has a Roud Folk Song Index number of 20612.
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| 26. | It has a Roud Folk Song Index number of 3483.
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| 27. | It has a Roud Folk Song Index number of 19297.
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| 28. | It has a Roud Folk Song Index number of 13029.
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| 29. | It has a Roud Folk Song Index number of 20605.
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| 30. | The BBC maintained that the index number was pure coincidence.
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