Amanda Cant, Macmillan

$12.00

Jeanette Greenwell, Mcgraw Hill

$5.00

Raquel Alvarez, Actualidad

$9.10

Kniveton - Llanas, Macmillan

$4.80

Richard Lee, Garnet

$5.00

Audy Y. Castañeda C., Richmond

$7.00

Lenore Cohen, Richmond

$25.00

S. Brewster - A. Lane, Richmond

$21.00

$38.00

Paul a Davies, Macmillan

$4.80

$4.80

Hans Mol, Macmillan

$12.00

Carmen Navarro, Richmond

$19.00

Prieto, Mcgraw Hill

$18.00

$38.00