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the problem stresses
math.	сущность проблемы (ssn)

the Problems : 1215 phrases in 77 subjects

Air defense	2
American usage, not spelling	6
Architecture	1
Artificial intelligence	3
Astronautics	1
Automobiles	2
Aviation	2
Bookish / literary	2
Business	34
Business style	5
Cartography	1
Chess	1
Cinematography	1
Cliche / convention	2
Computers	1
Construction	1
Cultural studies	1
Diplomacy	22
Drilling	1
Drug-related slang	1
Ecology	3
Economics	8
Education	1
Electronics	1
Energy industry	1
European Bank for Reconstruction and Development	2
Figurative	2
Figure of speech	1
Finances	1
Firefighting and fire-control systems	1
Formal	5
Gas processing plants	1
General	322
Historical	1
Idiomatic	3
Information technology	4
Labor law	1
Law	4
Logic	1
Makarov	250
Management	1
Mass media	4
Mathematics	203
Mechanics	17
Medical	1
Medical appliances	1
Microsoft	3
Military	14
Mining	6
Municipal planning	1
Musical instruments	1
Natural resourses and wildlife conservation	1
Neural networks	1
Patents	5
Philosophy	2
Physics	4
Politics	34
Production	1
Programming	95
Psychology	4
Psychotherapy	2
Quotes and aphorisms	4
Radio	2
Radiolocation	1
Research and development	6
Rhetoric	11
SAP	1
Scientific	54
Security systems	3
Soviet	7
Statistics	1
Technology	6
Telecommunications	1
Trade unions	1
Transport	3
United Nations	9
Water supply	1