Fraz 1: Nan lane 1999, Robert Kottwitz devlope yon teyori sou endoskopi trese ak Shelstad e li te konplete travay sou endoskopi tanpere an 2008 -- 9. Sentans 2: Nan lane 1999, Robert Kottwitz devlope yon teyori endoskopi trese ak Shelstad. Nan 2008 -- 9 li te konplete travay sou endoskopi tanpere. Kesyon: Èske Sentans 1 ak Sentans 2 eksprime menm sans? Wi oswa Non?
Wi wi