Antonio Perez Esclarin, San Pablo

$7.29

Ana Ponce de Leon, Ccs

$14.40

$14.40

Norman E. Gronlund, Trillas

$34.91

$6.07

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

L. Sagols - J. Linares, Mcgraw Hill

$25.20

H. Reichmann, Thomson

$42.00

Antonio Perez Esclarin, San Pablo

$8.40

Fe y Alegria, Estudios

$9.60

$10.44

Pablo Rios Cabrera, Cognitus

$9.13

Prof. Ramon Grau, Ediciones Grau

$7.20

Daniel Goleman, Building

$27.95

Miguel Del Cura, Paraninfo

$45.60