$6.07

$1.51

Victor Colina, Biosfera

$9.24

$10.44

$14.40

$10.44

Antonio Perez Esclarin, San Pablo

$7.29

Pablo Rios Cabrera, Cognitus

$9.13

Dario Linares Hernandez, Dl Editoriales

$10.69

Abel Cortese, Planeta

$30.00

Jose Gregorio Bello P., Panapo

$7.20

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

Antonio Luis Cardenas, Dasa

$4.80

L. Sagols - J. Linares, Mcgraw Hill

$25.20

Luis Quintana, Mcgraw Hill

$24.00