@article{78465,
      author = {Langridge, Derek Wilton.},
      url = {http://library.usi.edu/record/78465},
      title = {Approach to classification: for students of librarianship},
      publisher = {Linnet Books},
      recid = {78465},
      pages = {122 p.},
      address = {[Hamden, Conn.]},
      year = {1973},
}