Farmers' estimations as a source of production data : methodological guidelines for cereals in Africa /
Josette Murphy, Dennis J. Casley, John J. Curry.
- Washington, D.C. : World Bank, 1991.
- 71 p. ; 28 cm.
- World Bank technical paper, Africa Technical Department series no. 132. 0253-7494 ; .
- World Bank technical paper ; no. 132. World Bank technical paper. Africa Technical Department series. .