Practical air navigation.
Edition: 2d ed.  By Thoburn C. Lyon.
Publisher: U.S. Govt. print. off.
Published: 1945
Place of publication: Washington
Language: eng
Number of pages: 351
Subjects: Navigation (Aeronautics)
Notes: At head of title:  United States Dept. of commerce. Civil aeronautics administration.
Plate and folded charts in pocket.
"This second edition...is, in effect, its fifth edition, the first three editions having been issued as Special publication no. 197, of the United States Coast and geodetic survey."--Pref.
"Publications of the Civil aeronautics administration":  p. 343-345.