Agriculture	66
American usage, not spelling	1
Analytical chemistry	1
Athletics	1
Aviation	2
Book binding	1
Botany	7
Boxing	2
British usage, not spelling	1
Chemistry	27
Coal	13
Commerce	2
Communications	49
Construction	30
Criminal law	2
Cultural studies	11
Cycling other than sport	4
Demography	1
Earth sciences	71
Economics	4
Education	2
Electronics	94
Entomology	1
Environment	3
Equestrian sports	1
Fish farming pisciculture	1
Food industry	1
General	115
Health care	19
Hobbies and pastimes	14
Human resources	6
Ichthyology	2
Immigration and citizenship	3
Industry	108
Informal	1
Information technology	25
Law	6
Leather	2
Life sciences	36
Linguistics	2
Marketing	4
Materials science	5
Mechanic engineering	119
Medical	115
Metallurgy	94
Microscopy	1
Microsoft	9
Mineral products	2
Municipal planning	12
Natural resourses and wildlife conservation	7
Natural sciences	35
Ornithology	1
Physical sciences	3
Politics	3
Religion	1
Scientific	85
Social science	6
Sociolinguistics	2
Swimming	1
Technology	254
Textile industry	5
Transport	282