A structure from the sixth millennium cal BC with no artifactual content at San Quirce (Palencia, Spain): a multidisciplinary study

1. Terradillos-Bernal, M.
2. Allué, E.
3. Carrancho, Á.
4. Díez Fernández-Lomana, J.C.
5. Iriarte-Chiapusso, M.-J.
6. Jordá Pardo, J.F.
7. Vallverdú, J.