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Weatherall | 9 months ago (raw) | root | parent | reply | flag +1 
 mebe this can assist:

https://www.goodreads.com/book/show/6013398-erectus-walks-amongst-us
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Weatherall | 9 months ago (raw) | root | parent | reply | flag +1 
 not an endorsement, its just quite data heavy so perhaps a good source...