Exports - Africa, Sub-Saharan.

Improving cash crops in Africa : = factors influencing the productivity of cotton, coffee, and tea grown by smallholders / by: (Language materials, printed)

Did external barriers cause the marginalization of Sub-Saharan Africa in world trade? by: (Language materials, printed)

Produce trade- Africa, Sub-Saharan.

Cotton trade- Africa, Sub-Sahara

Tariff- Africa, Sub-Saharan.

Farms, Small- Africa, Sub-Saharan.

Tariff- OECD countries.

Agricultural productivity- Africa, Sub-Saharan.

Nontariff trade barriers- Africa, Sub-Saharan.

Africa, Sub-Saharan- Commerce.

Nontariff trade barriers- OECD countries.

Cash crops- Africa, Sub-Saharan.

Crops- Africa, Sub-Saharan.

Exports- Africa, Sub-Saharan.

Transportation- Costs.- Africa, Sub-Saharan