$8.70

Antonio Perez Esclarin, San Pablo

$7.00

Luis Quintana, Mcgraw Hill

$20.00

Ana Ponce de Leon, Ccs

$12.00

Frida Diaz Barriga Arceo, Mcgraw Hill

$30.00

Pablo Rios Cabrera, Cognitus

$7.61

Jose Gregorio Bello P., Panapo

$6.00

$4.00

$8.70

Prof. Ramon Grau, Ediciones Grau

$6.00

Abel Cortese, Planeta

$25.00

$1.00

$4.00

Carlos Marx, Literatura Narrativa

$8.50

Victor Colina, Biosfera

$7.00