Roberto Arenas, Mcgraw Hill

$62.40

Curtis M. Rimmerman, Lippincott

$75.60

D. Nicoll - C. Mark, Mcgraw Hill

$61.89

Maria A. Obando, Ula

$12.00

Schwartz y Otros, Mcgraw Hill

$62.40

M. Nordin - V. Frankel, Lippincott

$96.00

R. Zane - J. Kosowsky, Lippincott

$55.20

Rodolfo Rodriguez C., Mcgraw Hill

$49.20

Fernando Guzman Toro, Vadell Hermanos

$14.40

Patrick W. Tank, Lippincott

$42.00

T.w. Sadler, Lippincott

$38.40

Francisco A. Orduña P., Diaz de Santos

$36.00

Thomas M. de Fer, Lippincott

$93.60

G. Frendl - R. Urman, Lippincott

$54.39

John T. Daugirdas, Lippincott

$86.40