The Role of Single Stars of Low and Intermediate Mass in Galactic   Chemical Evolution
  A short overview is presented of the role that Low and Intermediate mass stars play in Galactic Chemical Evolution; their action affects key elements and isotopes, like deuterium, He-3, Li-7, carbon and nitrogen, and s-process nuclei. In all those cases, critical uncertainties still remain and are briefly discussed here. 
Nikos Prantzos (Institut d'Astrophysique de Paris)