THIS GUIDE IS DEDICATED TO THE MEMORY of Simon Chevassus-Agnès, a former officer in the Food and Nutrition Division of FAO Responding to requests from users, he was, jointly with François Sizaret, responsible for it being written
We thank Claude Maire and Agnès Dhur for their input into the research and analysis of the relevant documents, and Marie-Claude Dop and Cristina Lopriore, whose assistance was especially valuable in revising and adapting the guide in English
