Esp. y Mgs. Aura M. Parra, Luz

$8.30

Tintinalli, Mcgrawhill

$93.60

Joseph E. Muscolino, Lippincott

$69.60

R. Hyatt - P. Scanlon, Lippincott

$28.20

C. Braun - C. Anderson, Lippincott

$114.00

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.48

Curtis M. Rimmerman, Lippincott

$75.60

O. Quiros - J. Quiros, Amolca

$50.40

M. Breskin - K. Dumith, Mcgraw Hill

$69.60

T.w. Sadler, Lippincott

$38.40

J. Fuente - G. Heinze, Mcgraw Hill

$30.00

Francisco A. Orduña P., Diaz de Santos

$36.00

Burke A. Cunha, Mcgraw Hill

$30.00

Leonard Crowley, Mcgraw Hill

$68.40

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00