$21.31

Yris Molina G., Monfort

$7.20

R. Rivero - C. Contreras, Romor

$7.80

$24.00

Ines Silva de Legorburu, Santillana

$9.44

Diaz de Cerio, Estudios

$9.00

Concetta de Risi de Alzur, Cobo

$11.94

Rocio Bueno, Mcgraw Hill

$6.00

Elba Albujas Veliz, Biosfera

$21.00

Dalia Borges, Romor

$6.00

Y. Arcas - L. Arenas, Santillana

$12.14

Marcos J. Alfonso B., Santillana

$11.94

D. Borges - C. Castillo, Romor

$8.40

Douglas Palma, Actualidad Escolar 2000

$17.50

$9.36