Ricardo Gil Otaiza, San Pablo

$6.00

$10.20

$8.40

$11.48

Agustin de la Herran, Mcgraw Hill

$36.00

$9.60

V. Mir - D. Corominas, Narcea

$6.00

$10.20

Miriam Perez Acevedo, San Pablo

$6.00

$10.20

Jorge Ullua, Homosapiens

$6.96

$14.40

Beatriz Goris, Homosapiens

$7.80