Columbia subject headings:
Agriculture--Environmental aspects--United States.
Agriculture--Social aspects--United States.
Food habits--Environmental aspects--United States.
Food habits--United States--History.
Instructional and educational works.
Self-help publications.
Harvard subject headings:
Agriculture--Environmental aspects--United States
Agriculture--Social aspects--United States.
Food habits--Environmental aspects--United States.
Food habits--United States--History
Instructional and educational works
Self-help publications
Princeton subject headings:
Agriculture--Environmental aspects--United States.
Agriculture--Social aspects--United States.
Food habits--Environmental aspects--United States.
Food habits--United States--History.