H. Gutierrez-r.de la Vara, Mcgraw Hill
$50.00
Gaceta Nº 38.596, la Piedra
$2.85
M. Morris Mano - Ch. Kime, Prentice Hall
$22.00
Gaceta Nº 6.185, la Piedra
$9.00
Imelda Arana Saenz, Magisterio
$7.00
Gaceta Nº 39.668, Njr
$2.00
Milton & Arnold, Mcgraw Hill
$28.00