Fernando Guzman Toro, Vadell Hermanos

$14.40

Jose F. Gonzalez, Mcgraw Hill

$45.60

Cassimeris

$102.00

M. Nordin - V. Frankel, Lippincott

$96.00

R. Baldor - A. Ehrlich, Lippincott

$156.00

Miriam Guana, Mcgraw Hill

$61.89

Linda E. Muños Espinosa, Mcgraw Hill

$144.00

E. Mayeaux - J. Cox, Lippincott

$170.40

Carlos A. Roldan, Lippincott

$135.60

I. Martin - Lacave, Diaz de Santos

$72.00

R. Hyatt - P. Scanlon, Lippincott

$28.20

R. Walls - M. Murphy, Lippincott

$50.58

Tintinalli, Mcgrawhill

$93.60

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.48

Esp. y Mgs. Aura M. Parra, Luz

$8.30