Juan J. Gutierrez, Girasol

$11.04

Luis E. Rincon, Girasol

$27.50

$2.40

G. Katz - M. Katz, Mcgraw Hill

$6.00

Marcos J. Alfonso B., Santillana

$9.10

Prof. Almery Ramallo, Actualidad

$23.68

Douglas Palma, Actualidad Escolar 2000

$13.00

Maria Pereira-p. Velasco, Trillas

$12.00

Fedosy Santaella, Loqueleo

$15.00

$18.20

Fernando Gonzalez Lucini, Estudios - Anaya

$8.40

Francisco Avila, Saber

$12.00

N. Odreman - R. Diaz, Everest

$11.94

Sergio Medina Lopez, Noriega

$18.48

J. Pecina - R. Ma. Rosas, Larousse

$11.94