Conversion table of code and title changes, third to fourth edition, Dictionary of occupational titles

Conversion table of code and title changes, third to fourth edition, Dictionary of occupational titles

Manylion Llyfryddiaeth
Awdur Corfforaethol: United States Employment Service
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Washington The Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off. 1979.
Pynciau:
Occupations > Terminology.
Occupations > United States > Classification.