  Using the U(3)R x U(3)L extended Linear Sigma Model with the ordinary
(pseudo)scalar and (axial)vector mesons as well as a scalar glueball, we study
the vacuum phenomenology of the scalar-isoscalar resonances f0(1370), f0(1500)
and f0(1710). We present here a solution, based only on the masses and not yet
on decays, in which the resonances f0(1370) and f0(1500) are predominantly
nonstrange and strange qbar-q states respectively, and the resonance f0(1710)
is predominantly a scalar glueball.
