$10.20

H. Reichmann, Thomson

$42.00

Antonio Perez Esclarin, San Pablo

$6.00

Prof. Ramon Grau, Ediciones Grau

$7.20

L. Sagols - J. Linares, Mcgraw Hill

$25.20

Luis Quintana, Mcgraw Hill

$24.00

Antonio Perez Esclarin, San Pablo

$8.40

$1.52

Pablo Rios Cabrera, Cognitus

$9.13

Jose Gregorio Bello P., Panapo

$7.20

$10.44

Antonio Perez Esclarin, San Pablo

$7.30

Miguel Del Cura, Paraninfo

$45.60

$6.07

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00