$8.50

Agustin de la Herran, Mcgraw Hill

$30.00

V. Mir - D. Corominas, Narcea

$5.00

$8.00

Miriam Perez Acevedo, San Pablo

$5.00

Ricardo Gil Otaiza, San Pablo

$5.00

$7.00

$8.50

$9.57

$12.00

David Wechsler, Paidos

$7.89

$8.50

Jorge Ullua, Homosapiens

$5.80