Methods of indicating a glide path by visual means
By: J. W. Sparke.
Contributors: Aeronautical Research Council (Great Britain)
Series: Aeronautical Research Council.  Current papers -- no. 502
Publisher: Ministry of Aviation, Aeronautical Research Council
Published: 1960
Place of publication: London
Number of pages: 16
Notes: Also published as R.A.E. technical note, no. EL 160, 1958.

Bibliographical references: p. 11.