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Old 10th November 2019, 05:47 PM   #6
A. G. Maisey
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Join Date: May 2006
Posts: 6,882
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Thank you for your response Mickey.

I am currently I am in the middle of one of my periodic work cycles, I do not have time right now to spend much, if any, time on trying to give you a halfway acceptable answer to your question. My gut feeling is that there is no answer.

I know of no research on this subject, and the period when any such hierarchical stratification might have applied is long past. But I might be able to dig up something. If I can, I will post what I might find here.
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