Eastern Union Railway

Military personnel

United States. General Accounting Office

1990

Occupational employment survey booklet of definitions

United States. Bureau of Labor Statistics. Office of Employment and Unemployment Statistics

1990

Descriptions of occupations

United States. Bureau of Labor Statistics.

1918

Enhanced Occupational Outlook Handbook

J. Michael Farr

1997

The competent head

Dilum Jirasinghe

1996

Understanding the classical music profession

Dawn Elizabeth Bennett

2008

The US Army Signal School apprenticeship program for the trade of central office telephone installer and repairer

United States Department of the Army

1976

The Handbook of Model Job Descriptions

Barry Cushway

2003