Miguel Del Cura, Paraninfo

$45.60

Victor Colina, Biosfera

$9.24

Antonio Perez Esclarin, San Pablo

$8.40

Fe y Alegria, Estudios

$9.60

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

$1.51

A. Rubio Gil, Diaz de Santos

$33.60

Luis Quintana, Mcgraw Hill

$24.00

Abel Cortese, Planeta

$30.00

Ana Ponce de Leon, Ccs

$14.40

$10.44

$6.07

H. Reichmann, Thomson

$42.00

$10.44

Norman E. Gronlund, Trillas

$34.91