Mario A. Hernandez O., Mcgraw Hill

$33.00

Marc S. Sabatine, Lippincott

$37.60

Linda E. Muños Espinosa, Mcgraw Hill

$120.00

Gerard M. Doherty, Mcgraw Hill

$98.00

Rodolfo Rodriguez C., Mcgraw Hill

$41.00

Maria A. Obando, Ula

$10.00

S. Joo - A. Kau, Lippincott

$57.60

R. Walls - M. Murphy, Lippincott

$42.15

O. Quiros - J. Quiros, Amolca

$42.00

Esp. y Mgs. Aura M. Parra, Luz

$6.92

Jose Saban Ruiz, Diaz de Santos

$80.00

Leonard Crowley, Mcgraw Hill

$57.00

Miriam Guana, Mcgraw Hill

$51.58

J. Fuente - G. Heinze, Mcgraw Hill

$25.00

Bezares, Mcgraw Hill

$30.00