Ana Ponce de Leon, Ccs

$12.00

Victor Colina, Biosfera

$7.70

Carlos Marx, Literatura Narrativa

$8.50

H. Reichmann, Thomson

$35.00

Antonio Luis Cardenas, Dasa

$4.00

Norman E. Gronlund, Trillas

$29.10

Antonio Perez Esclarin, San Pablo

$6.08

Abel Cortese, Planeta

$25.00

$8.50

$5.06

$8.70

Prof. Ramon Grau, Ediciones Grau

$6.00

$8.70

Luis Quintana, Mcgraw Hill

$10.00

A. Rubio Gil, Diaz de Santos

$28.00