Development of sample surveys for the estimation of agricultural production, u.a.r. /A review of the work done during the period Jul 1955 - Apr 1962/.

agricultural sector arroz cebolla coton cotton encuestas experimentation farm area fauchage forecasting haricot commun kidney beans mais maize methode methods milk yield mowing muestreo oignon onions papa pomme de terre potatoes production rendement laitier rendimiento lechero rice riz sampling secteur agricole sector agrario siega surface d'exploitation surveys trigo variedades varieties wheats