  We consider two Z/2Z-actions on the Podles generic quantum spheres. They
yield, as noncommutative quotient spaces, the Klimek-Lesniewski q-disc and the
quantum real projective space, respectively. The C*-algebras of all these
quantum spaces are described as graph C*-algebras. The K-groups of the thus
presented C*-algebras are then easily determined from the general theory of
graph C*-algebras. For the quantum real projective space, we also recall the
classification of the classes of irreducible *-representations of its algebra
and give a linear basis for this algebra.
