  We determine the fermion mass dependence of Euclidean finite volume partition
functions for three-dimensional QCD in the epsilon-regime directly from the
effective field theory of the pseudo-Goldstone modes by using zero-dimensional
non-linear sigma-models. New results are given for an arbitrary number of
flavours in all three cases of complex, pseudo-real and real fermions,
extending some previous considerations based on random matrix theory. They are
used to describe the microscopic spectral correlation functions and smallest
eigenvalue distributions of the QCD3 Dirac operator, as well as the
corresponding massive spectral sum rules.
