His major work was in the fields of political sociology , trade union organization , social stratification , public opinion , and the sociology of intellectual life .
Seymour Martin Lipset ( March 18 , 1922 -- December 31 , 2006 ) was an American sociologist .
Seymour Martin Lipset 's major work was in the fields of political sociology , trade union organization , social stratification , public opinion , and the sociology of intellectual life .
Seymour Martin Lipset ( March 18 , 1922 -- December 31 , 2006 ) was an American sociologist .