  We have searched for associated production of the lightest chargino,
$\widetilde{W}_1$, and next-to-lightest neutralino, $\widetilde{Z}_2$, of the
Minimal Supersymmetric Standard Model in $p\bar{p}$ collisions at
\mbox{$\sqrt{s}$ = 1.8 TeV} using the \D0 detector at the Fermilab Tevatron
collider. Data corresponding to an integrated luminosity of 12.5$\pm 0.7$ \ipb
were examined for events containing three isolated leptons. No evidence for
$\widetilde{W}_1\widetilde{Z}_2$ pair production was found. Limits on
$\sigma(\widetilde{W}_1\widetilde{Z}_2)$Br$(\widetilde{W}_1\to
l\nu\widetilde{Z}_1)$Br$(\widetilde{Z}_2\to l\bar{l}\widetilde{Z}_1)$ are
presented.
