Jose F. Gonzalez, Mcgraw Hill

$45.60

O. Quiros - J. Quiros, Amolca

$50.40

Curtis M. Rimmerman, Lippincott

$75.60

Miriam Guana, Mcgraw Hill

$61.89

P. Paulman - A. Paulman, Wolters Klumer

$82.09

John T. Daugirdas, Lippincott

$86.40

Bezares, Mcgraw Hill

$36.00

Roberto Arenas, Mcgraw Hill

$62.40

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00

S. Mcphee - M. Papadakis, Mcgraw Hill

$93.60

R. Walls - M. Murphy, Lippincott

$50.58

Cassimeris

$102.00

Francisco A. Orduña P., Diaz de Santos

$36.00

Rebecca L. Shoener, Mcgraw Hill

$42.00

C. Braun - C. Anderson, Lippincott

$114.00