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Observer/Collectorstresses
mil., abbr. O/C
Observer: 715 phrases in 70 subjects
Advertising5
American usage, not spelling2
Armored vehicles2
Artillery32
Astronautics13
Astronomy11
Automated equipment2
Aviation32
Aviation medicine1
Business2
Cartography2
Climatology1
Clinical trial5
Collective3
Construction1
Copyright1
Databases1
Diplomacy8
Ecology3
Economy1
Elections18
Electronics8
Energy industry1
Fantasy and science fiction1
Firefighting and fire-control systems5
Fishery fishing industry1
Food industry1
Foreign affairs2
General72
Geophysics3
Gyroscopes3
Hydrology1
Information technology7
Intelligence and security services2
Law6
Makarov32
Maritime law & Law of the Sea2
Marketing1
Mass media13
Mathematics10
Medical8
Meteorology7
Metrology4
Military239
Missiles2
Nautical10
Navigation9
Oil and gas1
Optics branch of physics1
Patents2
Pharmacology1
Physics8
Politics26
Programming14
Proper name1
Psychology3
Quality control and standards2
Quantum mechanics1
Radiolocation4
Rhetoric2
Robotics3
Security systems2
Sports1
Statistics1
Stock Exchange1
Technology32
Torpedoes2
Trade unions3
United Nations5
Weapons and gunsmithing3