Pablo Rios Cabrera, Cognitus

$9.13

Ana Ponce de Leon, Ccs

$14.40

A. Rubio Gil, Diaz de Santos

$33.60

H. Reichmann, Thomson

$42.00

Victor Colina, Biosfera

$9.24

Livian Navarro Caro, Panapo

$1.20

Fe y Alegria, Estudios

$9.60

$10.20

Abel Cortese, Planeta

$30.00

$10.44

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

Luis Quintana, Mcgraw Hill

$24.00

Dario Linares Hernandez, Dl Editoriales

$10.69

$14.40

L. Sagols - J. Linares, Mcgraw Hill

$25.20