$8.70

Frida Diaz Barriga Arceo, Mcgraw Hill

$30.00

Miguel Del Cura, Paraninfo

$38.00

A. Rubio Gil, Diaz de Santos

$28.00

Luis Quintana, Mcgraw Hill

$20.00

Dario Linares Hernandez, Dl Editoriales

$8.91

Abel Cortese, Planeta

$25.00

Antonio Perez Esclarin, San Pablo

$6.08

Jose Gregorio Bello P., Panapo

$6.00

H. Reichmann, Thomson

$35.00

Norman E. Gronlund, Trillas

$29.10

$8.70

Victor Colina, Biosfera

$7.70

Antonio Luis Cardenas, Dasa

$4.00

Luis Quintana, Mcgraw Hill

$10.00