R. Baldor - A. Ehrlich, Lippincott

$156.00

Alexandro Bonifaz, Mcgraw Hill

$60.00

Leonard Crowley, Mcgraw Hill

$68.40

J. Garcia - J. Lopez, Mcgraw Hill

$56.40

Roberto Arenas, Mcgraw Hill

$62.40

Burke A. Cunha, Mcgraw Hill

$30.00

Lynn S. Bickley, Lippincott

$125.12

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.49

A. Herrera - M. Granados, Mcgraw Hill

$61.89

D. Cline - O. Ma -, Mcgraw Hill

$134.40

Rodolfo Rodriguez C., Mcgraw Hill

$49.20

Jose Saban Ruiz, Diaz de Santos

$96.00

Cassimeris

$102.00

Miriam Guana, Mcgraw Hill

$61.89

Esp. y Mgs. Aura M. Parra, Luz

$8.30