Analysis of information sources in references of the Wikipedia article "Surveillance" in English language version.
Studies [...] are based partially on Inquisition surveillance of foreigners and Protestants.
[...] accounts and inventories alike are generally within the area of surveillance of the auditor [...].
Physical surveillance is the act of making observations of people, vehicles, or the activities occurring at specific locations. [...] Physical surveillance may take place either at a fixed location, which is known as a stakeout, or in a continually moving situation, referred to as a tail.
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