unit sampling

: 43 phrases in 20 subjects

Accounting	3
Advertising	1
Business	1
Clinical trial	1
Ecology	3
Economics	3
Energy system	2
Forestry	3
General	2
Makarov	1
Mass media	1
Mathematics	8
Medical	1
Medical appliances	1
Metallurgy	1
Oil / petroleum	2
Oil and gas	1
Quality control and standards	3
Statistics	2
Technology	3