@article{125725,
      note = {Includes indexes.},
      author = {Freese, Ralph S., and McKenzie, Ralph.},
      url = {http://library.usi.edu/record/125725},
      title = {Commutator theory for congruence modular varieties /},
      publisher = {Cambridge University Press,},
      recid = {125725},
      pages = {227 p. :},
      address = {Cambridge [Cambridgeshire] ;},
      year = {1987},
}