ENSO mode and ENSO-like mode
period ratio of torsion mode to translation mode
150 ton Sea Surveillance Ship
Absenteeism surveillance
active laser surveillance
activity surveillance for building
Acute Flaccid Paralysis Surveillance
aerial surveillance systems
Aetiological surveillance
air pollution surveillance system
Air Surveillance Intelligence Radar
airport surveillance radar
alarming and surveillance
Alcohol abuse counselling and surveillance
Analysis of injury surveillance