@article{6300,
      author = {Belnap, Nuel D.,},
      url = {http://library.usi.edu/record/6300},
      title = {The logic of questions and answers /},
      publisher = {Yale University Press,},
      recid = {6300},
      pages = {vi, 209 p. ;},
      address = {New Haven :},
      year = {1976},
}