Rocio Bueno, Mcgraw Hill

$6.00

Juan J. Gutierrez, Girasol

$28.84

Marcela Hinojosa de Coria, Trillas

$8.71

J. Pecina - R. Ma. Rosas, Larousse

$1.38

Yris Molina G., Monfort

$7.20

$33.12

Norma Odreman, Everest

$6.60

R. Diaz - N. Diaz, Saber

$16.80

$31.88

Pablo Bravo, Biosfera

$23.76

Sergio Medina Lopez, Noriega

$18.48

Francisco Avila, Saber

$6.00

$25.81

Francisco Avila, Romor

$7.80

$6.00