History & comments

Changes6

1. add further references

   AlQuemist·10 May 2020, 20:49 (UTC+00:00)
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2. refs added and modified

   AlQuemist·19 January 2018, 08:54 (UTC+00:00)
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3. refs added

   AlQuemist·15 January 2018, 11:12 (UTC+00:00)
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4. refs added

   AlQuemist·15 January 2018, 10:43 (UTC+00:00)
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5. minor markup change

   AlQuemist·22 December 2017, 08:23 (UTC+00:00)
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6. references added

   AlQuemist·22 December 2017, 08:23 (UTC+00:00)
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