A. Rubio Gil, Diaz de Santos

$33.60

Ana Ponce de Leon, Ccs

$14.40

Norman E. Gronlund, Trillas

$34.91

Victor Colina, Biosfera

$9.24

$10.20

Antonio Perez Esclarin, San Pablo

$6.00

$10.44

Jose Gregorio Bello P., Panapo

$7.20

Livian Navarro Caro, Panapo

$1.20

Frida Diaz Barriga Arceo, Mcgraw Hill

$36.00

Pablo Rios Cabrera, Cognitus

$9.13

Prof. Ramon Grau, Ediciones Grau

$7.20

Miguel Del Cura, Paraninfo

$45.60

Abel Cortese, Planeta

$30.00

Antonio Perez Esclarin, San Pablo

$8.40