Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
G
o
o
g
l
e
|
Forvo
|
+
to phrases
operational concept
This HTML5 player is not supported by your browser
transp.
conception de l'exploitation
Operational Concept
:
3 phrases
in 2 subjects
Aviation
1
General
2
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
