Rodolfo Rodriguez C., Mcgraw Hill

$49.20

Jose F. Gonzalez, Mcgraw Hill

$45.60

Bezares, Mcgraw Hill

$36.00

S. Agabegi - E. Agabegi, Lippincott

$60.00

Julio Sepulvedad S., Mcgraw Hill

$40.80

Francisco A. Orduña P., Diaz de Santos

$36.00

Carlos A. Roldan, Lippincott

$135.60

Miriam Guana, Mcgraw Hill

$61.89

D. Fitzgibbon - J. Loeser, Lippincott

$150.00

M. Nordin - V. Frankel, Lippincott

$96.00

O. Quiros - J. Quiros, Amolca

$50.40

A. Herrera - M. Granados, Mcgraw Hill

$61.89

Roberto Arenas, Mcgraw Hill

$62.40

Linda E. Muños Espinosa, Mcgraw Hill

$144.00

Salvador Zubiran, Mcgraw Hill

$67.20