$10.44

Antonio Perez Esclarin, San Pablo

$6.00

Victor Colina, Biosfera

$9.24

Dario Linares Hernandez, Dl Editoriales

$10.69

Ana Ponce de Leon, Ccs

$14.40

Antonio Luis Cardenas, Dasa

$4.80

Prof. Ramon Grau, Ediciones Grau

$7.20

Jose Gregorio Bello P., Panapo

$7.20

H. Reichmann, Thomson

$42.00

Carreño, Kingkolor

$7.20

Antonio Perez Esclarin, San Pablo

$7.29

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

L. Sagols - J. Linares, Mcgraw Hill

$25.20

Abel Cortese, Planeta

$30.00

Luis Quintana, Mcgraw Hill

$24.00