Tea in Ceylon /ad hoc meeting on tea - Nuwara Eliya, Ceylon, 10-17 May 1965/.

accord commercial acuerdos comerciales besoin en main d'oeuvre comercio commerce commercialisation cultural methods demanda de trabajo exportaciones exportation exports farm area fertilisation fertilizer application ganancias inversiones investissement investment labour requirements marketing mercadeo mode de culture procesamiento processing production production data profit rendement rendimiento surface d'exploitation tea trade trade agreements traitement yields