Nhlamuselo ya le hansi
a John R. Christy, mukongomisi wa Ndzawulo ya Fambiselo ra Sayense ya Misava eYunivhesiti ya Alabama, eHuntsville, le U.S.A., hilaha swi vikiweke hakona eka magazini wa The Wall Street Journal, November 1, 2007.
a John R. Christy, mukongomisi wa Ndzawulo ya Fambiselo ra Sayense ya Misava eYunivhesiti ya Alabama, eHuntsville, le U.S.A., hilaha swi vikiweke hakona eka magazini wa The Wall Street Journal, November 1, 2007.