Columbia subject headings:
Harvard subject headings:
Farm produce--Grading--United States.
Fruit--Standards--United States.
Pesticide residues in food--Standards--United States.
Vegetables--Standards--United States.
Princeton subject headings:
Farm produce--United States--Grading.
Fruit--Standards--United States.
Pesticide residues in food--Standards--United States.
Vegetables--Standards--United States.