F. Villasmil - M. Villasm, Libreria Europa
$1.00
Gaceta Nº 36.607, Dabosan
$1.00
Maria Teresa Machado C., Coleccion Conocer
$5.80
Gaceta Nº 39.879, Njr
$1.80
Dr. Ing. Harry Osers, Refolit C.a.
$12.28
Imelda Arana Saenz, Magisterio
$7.00
D. Zill - P. Shanahan, Cengage Learning
$74.14
Hector R. Peñaranda Q., Cpluz
$10.00
Jose Peña Solis, Ediciones Paredes
$18.00
K. Leveno - G. Cunningham, Mcgraw Hill
$276.30
Gaceta Nº 40.112, Njr
$1.00
Gaceta Nº 30.597, Njr
$1.00