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группа наблюдения stresses
med.	study group (при медицинском исследовании Мария100)
группа наблюдений
math.	group of observations

группа наблюдения: 48 phrases in 21 subjects

Advertising	1
Astronautics	3
Aviation	4
Cartography	1
Ecology	1
Energy industry	1
European Bank for Reconstruction and Development	1
Foreign affairs	1
General	1
Informal	1
Intelligence and security services	1
Makarov	1
Mass media	1
Medical	1
Military	20
Name of organization	1
Police	2
Politics	3
Scientific	1
Security systems	1
Technology	1