A recent experiment LSND at Los Alamos has provided\cite{1} an indication of
νμ−νe oscillations with Δm2 of
order 1ev2 or greater and sin22θeμ between 2×10−3 and 102. Such a value of Δm2 for νμ−νe
oscillations was not expected in the standard see-saw model\cite{2} suggested
by SO(10) with a large mass hierarchy because it leads to too large a value of
m(ντ) to fit cosmological constraints. Furthermore within that model
the LSND result is inconsistent with the indications of oscillations from both
atmospheric neutrinos\cite{3} and solar neutrinos.\cite{4}Comment: 3 pages, latex, no figure