  High S/N ratio spectra have been obtained at CFHT at a spectral resolution of
100 000 for HD 84397 and two other metal poor stars.
  For HD 84 937, the S/N of 650 per pixel was obtained, yielding Li-6/Li-7 =
0.052 with a sigma of 0.019. The Li-6 abundance is compared with recent models
of formation of light elements LiBeB. This comparison shows that Li-6 is either
undepleted or only moderatly depleted in the star of interest. The depletion of
Li-7 in this star is estimated to be less than 0.1 dex. The abundance of
lithium on the Spite plateau accordingly can be takien as representative of the
cosmological primordial lithium. See the joint paper astro-ph/9811327.
