  We investigate fermion liquids interacting with longitudinal and transverse
abelian gauge fields via bosonization. In two spatial dimensions we obtain the
fermion propagator for the specific case of a Coulomb plus Chern-Simons gauge
action. We discuss the relevance of this result to the Halperin-Lee-Read theory
of the $\nu =1/2$ Landau level and demonstrate how Kohn's theorem is satisfied.
