Williams, Mcgraw Hill

$6.00

Jose Luis Morales, Logman

$5.76

Prieto, Mcgraw Hill

$21.60

Kniveton - Llanas, Macmillan

$5.76

Beare / Gardner, Macmillan

$9.60

Richard Lee, Garnet

$6.00

Lenore Cohen, Richmond

$25.00

Jose F. Amador M., Editorial Educativa

$5.76

Carmen Navarro, Richmond

$23.00

Paul a Davies, Macmillan

$5.76

$9.10

Lenore Cohen, Richmond

$25.00

S. Brewster - A. Lane, Richmond

$25.00

$26.00

$43.41