$6.00

Mercedes Hernandez P., Biosfera

$23.00

Irma Del Valle Brito, Santillana

$11.21

Mariana Obregon, Saber

$23.00

Doris Flores - L. Davila, Larousse

$11.94

Reinaldo Marin, Santillana

$11.38

Clara Martinez, Girasol

$32.50

C. Navarro - M. Rull, Santillana

$35.00

Mariana Obregon, Saber

$23.00

J. Pecina - R. Ma. Rosas, Larousse

$11.94

Marilo Moreno, Actualidad Escolar 2000

$4.73

Henry Cedeño, Cobo

$9.60

$24.00

Gisela Soto, Noriega

$27.95

Francisco Avila, Santillana

$13.58