Subject headings : used in the dictionary catalogs of the Library of Congress
7. ed
1966
1432 S
Book
English
Subject headings for aeronautical index
Engineering Index Backfile | 1940
|Aviation Subject Headings and classification Guide
TIBKAT | 1966
|Subject Headings for Index of NACA Publications
NTRS | 1949
Subject Headings for Index of NACA Publications
NTRS | 1947
Four headings worked on Trinity project
Engineering Index Backfile | 1958
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