curve depth

: 35 phrases in 19 subjects

Automobiles	1
Construction	2
Dosimetry	1
Drilling	1
Geology	1
Geophysics	2
Hydrology	4
Intelligence and security services	1
Makarov	2
Metallurgy	2
Natural resourses and wildlife conservation	2
Nautical	1
Oil / petroleum	1
Oil and gas	4
Production	1
Seismology	1
Technology	1
Transport	2
Water resources	5