@article{24754,
      author       = "Thompson, E. H. and Proceedings of a Symposium Held at
                      University College London 9.-13. August 1971",
      title        = "Proceedings of a Symposium Held at University College
                      London 9.-13. August 1971  ",
      year         = "1971",
      note         = "1 brož., Aerial Triangulation.",
}