Prof. Ramon Grau, Ediciones Grau

$6.00

Abel Cortese, Planeta

$25.00

Norman E. Gronlund, Trillas

$29.10

Antonio Perez Esclarin, San Pablo

$7.00

Pablo Rios Cabrera, Cognitus

$7.61

$5.06

Victor Colina, Biosfera

$7.70

H. Reichmann, Thomson

$35.00

Aldebaran Contreras, Davide Publicidad

$7.00

Luis Quintana, Mcgraw Hill

$20.00

Carreño, Kingkolor

$6.00

Livian Navarro Caro, Panapo

$1.00

$8.70

$1.27

A. Rubio Gil, Diaz de Santos

$28.00