http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Effect of Cu addition on the conductivity of xCuI-(1-x)Agl, (0.1< [symbol < with a line under it] x< [symbol < with a line under it] 0.4) solid solutions
On t.p. "< with a line under it" is symbol meaning "less than or equal to".
Dissertation (M.Sc.) -- Jabatan Fizik, Fakukti Sains, Universiti Malaya, 2010.