A(Li) versus [Fe/H] for the sample but divided into subsamples that are likely to be representative of the Galactic thin and thick disks. The separation has been done based on stellar ages and the thick disk sample (upper panel) contains stars older than 8 Gyr, while the thin disk sample (lower panel) contains stars younger than 8 Gyr. The colour-coding is based on the effective temperatures, as shown in the colour-bar on the right-hand side.