Livian Navarro Caro, Panapo

$1.20

$10.44

$6.07

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

Prof. Ramon Grau, Ediciones Grau

$7.20

Victor Colina, Biosfera

$9.24

Antonio Luis Cardenas, Dasa

$4.80

Abel Cortese, Planeta

$30.00

$6.07

H. Reichmann, Thomson

$42.00

L. Sagols - J. Linares, Mcgraw Hill

$25.20

Daniel Goleman, Building

$27.95

Carreño, Kingkolor

$7.20

Norman E. Gronlund, Trillas

$34.91

$10.20