Photographie aérienne à basse et/ou haute altitudes : exemple d'apports méthodologiques en Bretagne

摘要

Systematic analysis of a recent photographic survey of the I.G.N. added to several lowaltitude aerial surveys over the north of Finistère, allow now to throw into relief some methodological points ; these data concern soil marks revealing archaeological sites on ploughed lands, during winter or spring observations.