Carr, Stephen J. Improving cash crops in Africa: factors influencing the productivity of cotton, coffee, and tea grown by smallholders by Stephen J. Carr - Washington, D.C. World Bank 1993 - 58p. - World Bank technical paper no. 216 . ISBN: 0821325094 Subjects--Topical Terms: Tea Trade - Africa, Sub-SaharanCoffee Trade - Africa, Sub-SaharanFarms, Small - Africa, Sub-SaharanProduce Trade - Africa, Sub-SaharanExports - Africa, Sub-SaharanCrops - Africa, Sub-SaharanCrops - Africa, Sub-SaharanAgricultural Productivity - Africa, Sub-Saharan Dewey Class. No.: Z2 C23