Antonio Perez Esclarin, San Pablo

$8.40

Prof. Ramon Grau, Ediciones Grau

$7.20

A. Rubio Gil, Diaz de Santos

$33.60

$6.07

Livian Navarro Caro, Panapo

$1.20

$10.20

Victor Colina, Biosfera

$9.24

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

Dario Linares Hernandez, Dl Editoriales

$10.69

$6.07

Fe y Alegria, Estudios

$9.60

Miguel Del Cura, Paraninfo

$45.60

Jose Gregorio Bello P., Panapo

$7.20

$10.44

H. Reichmann, Thomson

$42.00