Columbia subject headings:
Absenteeism (Labor)--Congresses.
Absenteeism (Labor)--United States--Congresses.
Harvard subject headings:
Absenteeism (Labor)--Congresses.
Absenteeism (Labor)--United States--Congresses.
Princeton subject headings:
Absenteeism (Labor)--Congresses.
Absenteeism (Labor)--United States--Congresses.