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lsvalgaard
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Shed more light! Feb 19, 2015 22:04:40 GMT sigurdur likes this
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Post by lsvalgaard on Feb 19, 2015 22:04:40 GMT

www.leif.org/research/Counting-Sunspots.pdf
lsvalgaard
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Shed more light! Feb 19, 2015 22:05:35 GMT sigurdur likes this
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Post by lsvalgaard on Feb 19, 2015 22:05:35 GMT

www.leif.org/research/Counting-Sunspots.pdf
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