@article{49613,
      author = {Chadwick, H. Munro},
      url = {http://library.usi.edu/record/49613},
      title = {The heroic age,},
      publisher = {University Press,},
      recid = {49613},
      pages = {xi, 474 p.},
      address = {Cambridge,},
      year = {1967},
}