  The model under consideration is a two-dimensional two-component plasma,
stable against collapse for the dimensionless coupling constant $\beta<2$. The
combination of a technique of renormalized Mayer expansion with the mapping
onto the sine-Gordon theory provides the full thermodynamics of the plasma in
the whole stability range of $\beta$. The explicit forms of the
density-fugacity relationship and of the specific heat (at constant volume) per
particle are presented.
