Juan J. Gutierrez, Girasol

$8.00

$11.70

Mercedes Hernandez P., Biosfera

$18.00

$2.00

$2.50

Clara E. Martinez, Girasol Lite

$15.00

Francisco Avila, Saber

$5.00

G. Katz - M. Katz, Mcgraw Hill

$5.00

Sofia Smeke M., Noriega

$15.60

Juan J. Gutierrez, Girasol

$19.00

$5.00

Maria Pereira-p. Velasco, Trillas

$9.10

$5.00

Reinaldo Marin - Otros, Santillana

$7.50

I. Brito - M. Rull, Santillana

$17.00