M. Fraga - M. Fraga, Trillas
$19.50
Carlos A. Ledesma, Buyatti
$27.19
Pablo Corral Anuarbe, Mcgraw Hill
$41.52
Tatiana B. de Maekelt, Ciencias Politicas
$6.50
Emilia Bermudez, Cpluz
$6.00
Jose Saban Ruiz, Diaz de Santos
$30.00
Ricardo Bulmez, Urania
$15.00