Columbia subject headings:
Harvard subject headings:
Bananas--Developing countries.
Nutrition--Developing countries
Root crops--Developing countries.
Tuber crops--Developing countries.
Vegetables--Developing countries.
Princeton subject headings:
Bananas--Developing countries.
Nutrition--Developing countries.
Root crops--Developing countries.
Tuber crops--Developing countries.
Vegetables--Developing countries.