Marcos J. Alfonso B., Santillana

$6.00

Clara E. Martinez, Girasol Lite

$15.00

$6.22

Mercedez Hernandez Perez, Biosfera

$18.00

G. Katz - M. Katz, Mcgraw Hill

$5.00

Luis R. Rincon, Girasol Lite

$15.00

$14.30

J. Pecina - R. Ma. Rosas, Larousse

$1.15

$2.00

I. Brito - M. Rull, Santillana

$17.00

C. de Rissi - R. Peña, Cobo

$5.00

Monserrat Rull, Santillana

$7.00

$14.30

Miguel Del Valle Rojas, Actualidad

$18.20

Juan J. Gutierrez, Girasol

$19.00