Job instruction; a manual for shop supervisors and instructors; prepared and made available through courtesy of Western electric company.

"References": p. 43.

Suggested job sheet units for beginners in machine shop practice.

Mode of access: Internet.

Preliminary job descriptions for the domestic & personal service industry.

"Published by the Minnesota State Department of Education and the Division of Standards and Research of the United States Employment Service as a report on official projects 5196 ... 5201, [4155 and 4184] conducted under the auspices of the Works Progress Administration."

Available sources for the study of problem economics in Western Pennsylvania,

Mode of access: Internet.