Livian Navarro Caro, Panapo

$1.20

Abel Cortese, Planeta

$30.00

Norman E. Gronlund, Trillas

$34.91

Pablo Rios Cabrera, Cognitus

$9.13

L. Sagols - J. Linares, Mcgraw Hill

$25.20

Dario Linares Hernandez, Dl Editoriales

$10.69

$6.07

Prof. Ramon Grau, Ediciones Grau

$7.20

A. Rubio Gil, Diaz de Santos

$33.60

Fe y Alegria, Estudios

$9.60

Jose Gregorio Bello P., Panapo

$7.20

$10.44

Antonio Perez Esclarin, San Pablo

$8.40

$10.44

Antonio Perez Esclarin, San Pablo

$6.00