Julio Sepulvedad S., Mcgraw Hill

$40.80

Lynn S. Bickley, Lippincott

$125.12

Maria A. Obando, Ula

$12.00

D. Nicoll - C. Mark, Mcgraw Hill

$61.90

Francisco A. Orduña P., Diaz de Santos

$36.00

Thomas M. de Fer, Lippincott

$93.60

J. Fuente - G. Heinze, Mcgraw Hill

$30.00

Patrick W. Tank, Lippincott

$42.00

S. Joo - A. Kau, Lippincott

$69.12

Alexandro Bonifaz, Mcgraw Hill

$60.00

Burke A. Cunha, Mcgraw Hill

$30.00

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00

M. Breskin - K. Dumith, Mcgraw Hill

$69.60

Jose Saban Ruiz, Diaz de Santos

$96.00

Miriam Guana, Mcgraw Hill

$61.89