Murphy, Josette. <br/><br/>
Farmers' estimations as a source of production data: methodological guidelines for creals in Africa. 

 - Washington :  World Bank,  1991. 
 - World Bank Technical paper no.132 .
<br/><br/> The purpose of the paper is two fold: to inform management and technical of the validity and limitation of the farmers' estimations of cereal production as a data source for some information needs and to prodived technical staff and survey specialists with detailed guidelines on the organization design and implementation of data collection. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cereals.<br/>Farmers -- Africa.--Farmers -- Africa.