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по воздуху stresses
gen.	par avion (kee46)
avia.	par la voie des airs; par voie aérienne

по воздуху: 128 phrases in 18 subjects

Abbreviation	3
Astronautics	1
Aviation	65
Ecology	4
Education	1
Electronics	2
Forestry	2
General	6
Hydraulic engineering	1
International law	1
Military	28
Mining	1
Name of organization	1
Natural resourses and wildlife conservation	1
Oil and gas technology	1
Technology	5
Textile industry	1
United Nations	4