Miguel Del Valle Rojas, Actualidad Escolar 2000
$8.00
Gaceta Nº 39.433, Rgraficas 2021
$1.00
Maricarmen Paz Miranda, Atenea
$7.00
Gaceta No. 39.027, Njr
$1.00
Gaceta Nº 40.358, Njr
$1.40
Andrew S. Tanenbaum, Pearson Educacion
$25.00
Marcela Benassini, Prentice Hall
$20.88
Gaceta N. 40.639, Njr
$2.00