<Tr> <Td_colspan="2"> In office April 1, 1968--July 1, 1981 </Td> </Tr> <Tr> <Th> Preceded by </Th> <Td> George Woods </Td> </Tr> <Tr> <Th> Succeeded by </Th> <Td> Tom Clausen </Td> </Tr> <Tr> <Th_colspan="2"> Personal details </Th> </Tr>

Who is the longest saving president in the world