Aquest Publication Issue no existeix en el seu idioma, Veure en: English (en),
O utilitzar Google Translate:  

Globally, drying is the most widely used method for preserving foods for use in the home or for sale. When drying foods such as fruits, vegetables, spices, herbs and nuts value is added by drying and in such cases an investment in improved drying technologies may be economically viable. This technical brief describes improved systems suitable for use by small scale producers.