$10.44

Pablo Rios Cabrera, Cognitus

$9.13

Victor Colina, Biosfera

$9.24

Luis Quintana, Mcgraw Hill

$24.00

$14.40

Prof. Ramon Grau, Ediciones Grau

$7.20

$10.44

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

$1.52

A. Rubio Gil, Diaz de Santos

$33.60

Antonio Perez Esclarin, San Pablo

$6.00

$10.20

Ana Ponce de Leon, Ccs

$14.40

$10.44

Abel Cortese, Planeta

$30.00