John T. Daugirdas, Lippincott

$86.40

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00

Alexandro Bonifaz, Mcgraw Hill

$60.00

Esp. y Mgs. Aura M. Parra, Luz

$8.30

D. Cline - O. Ma -, Mcgraw Hill

$134.40

Roberto Arenas, Mcgraw Hill

$62.40

$8.40

Jose F. Gonzalez, Mcgraw Hill

$45.60

Francisco A. Orduña P., Diaz de Santos

$36.00

I. Martin - Lacave, Diaz de Santos

$72.00

M. Nordin - V. Frankel, Lippincott

$96.00

Tintinalli, Mcgrawhill

$93.60

Bezares, Mcgraw Hill

$36.00

Jose Saban Ruiz, Diaz de Santos

$96.00

R. Walls - M. Murphy, Lippincott

$50.58