Columbia subject headings:
High technology industries--Southern States.
Industries--Southern States.
Rural population--Southern States.
Southern States--Economic conditions.
Southern States--Occupations.
Harvard subject headings:
High technology industries--Southern States.
Industries--Southern States
Occupations--Southern States.
Rural population--Southern States.
Southern States--Economic conditions.
Princeton subject headings:
High technology industries--Southern States.
Industries--Southern States.
Occupations--Southern States.
Rural population--Southern States.
Southern States--Economic conditions.