-
313.
Electromechanical devices
Subjects
-
314.
Electrometallurgy
Subjects
ElectrolysisMetallurgy
-
315.
Electrometer
Subjects
Electric apparatus and appliances
-
316.
Electron tubes
Subjects
Electric discharges through gasesElectronics
-
317.
Electronic apparatus and appliances
Subjects
Scientific apparatus and instrumentsElectronicsPhysical instruments
-
318.
Electronic circuit design
Subjects
-
319.
Electronic circuits
Subjects
Electric circuitsElectronics
-
320.
Electronic commerce
Subjects
Information superhighwayCommerce
-
321.
Electronic control
Subjects
Electronic apparatus and appliancesIndustrial electronicsServomechanismsRemote control
-
322.
Electronic games
Subjects
Games
-
323.
Electronic materials
Subjects
-
324.
Electronic monitoring in the workplace
Subjects
Work environmentElectronic surveillance
-
325.
Electronic noise
Subjects
Signal theory (Telecomunications)
-
326.
Electronic office machines
Subjects
Electronic apparatus and appliancesOffice equipment and supplies
-
327.
Electronic packaging
Subjects
Electronic apparatus and appliancesElectronics
-
328.
Electronic security systems
Subjects
Electronic apparatus and appliancesElectronic systems
-
329.
Electronic surveillance
Subjects
Security systemsRemote sensing
-
330.
Electronic systems
Subjects
Electronic apparatus and appliancesElectronicsDigital electronics
-
331.
Electronic transformers
Subjects
Electric transformers
-
332.
Electronic waste
Subjects
Electronic apparatus and appliancesRefuse and refuse disposal
-
333.
Electronics
Subjects
ElectronesElectric engineeringVacuum-tubes
-
334.
Electronics in military engineering
Subjects
Military engineering
-
335.
Electronics mathematics
Subjects
Engineering mathematicsMathematical physics
-
336.
Electrooptical devices
Subjects
Electronic apparatus and appliancesOptical instruments
Last updated dated: 21/02/2026