Guest guest Posted October 9, 2001 Report Share Posted October 9, 2001 does anyone know when four level theory was first laid out? what text? what physician? what year? I think it was first put in words by the followers of ye tian shi in the wen re lun. when was this written? early 1700's, I think. thanks. -- , VOICE: (858) 946-0070 FAX: (858) 946-0067 Quote Link to comment Share on other sites More sharing options...
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