<p>Petits &eacute;changes en famille</p><p>La culture Blicquy/Villeneuve-Saint-Germain marque la fin des traditions danubiennes (N&eacute;olithique ancien) dans le nord de la France et en Belgique. Les onze sites &eacute;tudi&eacute;s sont localis&eacute;s en Belgique. Deux aires d&#39;implantation, distantes d&#39;une centaine de km sont distingu&eacute;es (en Hainaut et en Hesbaye). La mise en &oelig;uvre d&#39;une analyse techno-&eacute;conomique de l&#39;industrie lithique blicquienne visait &agrave; r&eacute;pondre &agrave; un double objectif: restituer l&#39;organisation socio-&eacute;conomique de la production lithique et les relations entretenues entre les diff&eacute;rentes zones de peuplement de cette culture. Cette &eacute;tude souligne la structure duale de la production lithique et sugg&egrave;re une sp&eacute;cialisation intra- voire intercommunautaire de cette production laminaire. L&#39;&eacute;tude de la diffusion des mati&egrave;res premi&egrave;res illustre l&#39;intensit&eacute; des relations entre les villages, impliquant fr&eacute;quemment le d&eacute;placement de tailleurs. Ce travail souligne &agrave; nouveau l&#39;importance des &eacute;changes dans la vie socio-&eacute;conomique de ces premi&egrave;res communaut&eacute;s agro-pastorales.</p><p>In the north of France and Belgium, the Blicquy/Villeneuve-Saint-Germain culture marks the end of the Danube traditions (Early Neolithic Period). The eleven sites studied are all found in Belgium. Two settlement areas, separated by 100 km, are highlighted (in Hainaut and in Hesbaye). The author has performed an analysis of the technical and economical characteristics of the Blicquian lithic industry, in order to describe the socio-economic organisation relating to lithic production as well as the relationships between the different settlement areas of this culture. The study concludes that there were two distinct types of production and suggests some kind of specialisation in the laminar production in the community, or even among several communities. The study of the diffusion networks of siliceous raw materials illustrates the intensity of relations between villages, often involving the movement of knappers, demonstrating further the importance of exchanges for the socio-economical welfare of those agro-pastoral communities.</p>