@article{21551,
      recid = {21551},
      author = {Lewin, Kurt,},
      title = {Field theory in social science; selected theoretical  papers.},
      publisher = {Harper},
      address = {New York,},
      pages = {xx, 346 p.},
      year = {1951},
      note = {"A publication of the Research Center for Group Dynamics,  University of Michigan."},
      url = {http://library.usi.edu/record/21551},
}