http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Perceived work effort as time devoted to an activity
U.S. Army Research Institute for the Behavioral and Social Sciences
Organizational Effectiveness Technical Area.
"Organizational Effectiveness Technical Area."
Technical paper (U.S. Army Research Institute for the Behavioral and Social Sciences) ; 337