Rocio Bueno, Mcgraw Hill

$6.00

Henry Cedeño, Cobo

$9.60

Ana Maria Maqueo, Noriega

$20.59

Yris Molina G., Monfort

$7.20

Yris Molina G., Monfort

$7.20

Elba Albujas Veliz, Biosfera

$21.00

$26.50

Ramona M. de Rivero, Romor

$6.00

Fernando Gonzalez Lucini, Estudios - Anaya

$11.94

$2.40

Pablo Bravo, Biosfera

$18.20

Nancy Zambrano Chavez, Trillas

$14.00

$1.80

Carmen Espinosa, Noriega

$6.38

G. Katz - M. Katz, Mcgraw Hill

$6.00