@article{427536,
      author = {Ladd, Everett Carll. and Hadley, Charles D.,},
      url = {http://library.usi.edu/record/427536},
      title = {Political parties and political issues: patterns in  differentiation since the New Deal},
      publisher = {Sage Publications},
      recid = {427536},
      pages = {82 p.},
      address = {Beverly Hills,},
      year = {1973},
}