Leonard Crowley, Mcgraw Hill

$68.40

Burke A. Cunha, Mcgraw Hill

$30.00

G. Rodriguez - J. Vaquero, Diaz de Santos

$63.60

E. Mayeaux - J. Cox, Lippincott

$170.40

Rodolfo Rodriguez C., Mcgraw Hill

$49.20

Fernando Guzman Toro, Vadell Hermanos

$14.40

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.48

$8.40

Esp. y Mgs. Aura M. Parra, Luz

$8.30

M. Breskin - K. Dumith, Mcgraw Hill

$69.60

Cassimeris

$102.00

D. Cline - O. Ma -, Mcgraw Hill

$134.40

T.w. Sadler, Lippincott

$38.40

T. Browne - G. Holmes, Lippincott

$60.00

B. Shakuntala Baliga, Mcgraw Hill

$108.00