We present the structure function ratios F-2(Li)/F-2(D) and F-2(C)/F-2
(D) measured in deep inelastic muon-nucleus scattering at a nominal in
cident muon energy of 200 GeV. The kinematic range 10(-4) < x < 0.7 an
d 0.01 < Q(2) < 70 GeV2 is covered. For values of x less than 0.002 bo
th ratios indicate saturation of shadowing at values compatible with p
hotoabsorption results.