  The thermodynamic Bethe ansatz equations for the Coqblin-Schrieffer model
have been solved for the first time to obtain the magnetic susceptibility in
the presence of crystal fields for non-zero temperatures. For the case of N = 4
effective ionic states an analytic expression for the limiting values of the
pseudo-energies has been found facilitating the numerical solution for various
crystal and magnetic field configurations. The single-impurity model applies to
a wide range of dense Kondo systems and has been used before to explain
apparent non-Fermi-liquid behavior. The flattening off of the susceptibility
curves at a substantially higher temperature than the specific heat is shown to
be a general feature of the Coqblin-Schrieffer thermodynamics.
