Columbia subject headings:
Agriculture--Nigeria--Katsina State.
Corn industry--Nigeria--Katsina State.
Cotton growing--Nigeria--Katsina State.
Structural adjustment (Economic policy)--Nigeria.
Harvard subject headings:
Cotton growing--Nigeria--Katsina.
Durra--Nigeria--Katsina.
Structural adjustment (Economic policy)--Nigeria--Katsina.
Princeton subject headings: