  We analyze lepton asymmetry induced in the decay of right--handed neutrinos
in a class of minimal left--right symmetric models. In these models, which
assume low energy supersymmetry, the Dirac neutrino mass matrix is proportional
to the charged lepton mass matrix. As a result, lepton asymmetry is calculable
in terms of 9 parameters, all measurable in low energy neutrino experiments. By
solving the Boltzmann equations numerically we show that adequate baryon
asymmetry is generated in these models. This however places significant
constraints on the light neutrino parameters. We find tan^2\theta_{12} =
m_1/m_2 and \theta_{13} = (0.01 - 0.07) for the neutrino oscillation angles,
and \beta = \alpha + \pi/2 for the Majorana phases.
