$10.00

A. Mclennan - A. Bates, Mcgraw Hill

$32.00

$6.00

Claude A. Villee, Mcgraw Hill

$51.86

S. Garcia - N. Heredia, Trillas

$21.00

Salazar - Sandoval - A., Mcgraw Hill

$55.00

B. Gonzalez - A. Ramirez, Mcgraw Hill

$28.50

Teresa Fortoul, Mcgraw Hill

$76.00

$6.00