Who puts the light in the bulb?

Description:

First person accounts of the work, surroundings, co-workers, and life styles of a furnace operator, glass-testing supervisor, power-station watch foreman, lineman, meter reader, electrical engineer, and others.

subjects: Technology,  Industrial arts,  Juvenile literature,  Vocational guidance,  Technology, juvenile literature,  Art,  Industrial arts, juvenile literature,  Vocational guidance, juvenile literature