@article{42813,
      author = {Catalán, Diego,},
      url = {http://library.usi.edu/record/42813},
      title = {Siete siglos de romancero; historia y poesía},
      publisher = {Editorial Gredos},
      recid = {42813},
      pages = {223p.},
      address = {Madrid,},
      year = {1969},
}