International language for aviation
Subtitle: instrument flight
By: [by] Thurston Griggs and Phillip J. Rulon.
Contributors: Rulon, Phillip Justin, 1900-    , joint author.
Publisher: Educational Research Corp.
Published: 1953
Place of publication: Cambridge
Language: eng
Number of pages: 92
Subjects: Aeronautics -- Terminology.
Notes: "Civil Aeronautics Administration Contract no. Cca-29581."
"ERC Project no. 37. Summary report, 21 January 1953."