A farm typology based on family situation was worked out following a study carried out in 1970 in the Vosges department. A new study was carried out four years later following the same sampling. Simple indicators throw light on the modifications in the original sampling, on the development of the farms in the typology and on the changes observed in the production systems. More often than not the farmers are unaware of the importance of the changes that have taken place in their farm.
