Jose F. Gonzalez, Mcgraw Hill

$45.60

Curtis M. Rimmerman, Lippincott

$75.60

F.j. Blanco - J.d. Cañete, Panamericana

$46.80

Bezares, Mcgraw Hill

$36.00

R. Baldor - A. Ehrlich, Lippincott

$156.00

Francisco A. Orduña P., Diaz de Santos

$36.00

Schwartz y Otros, Mcgraw Hill

$62.40

E. Mayeaux - J. Cox, Lippincott

$170.40

D. Nicoll - C. Mark, Mcgraw Hill

$61.90

M. Nordin - V. Frankel, Lippincott

$96.00

Maria A. Obando, Ula

$12.00

Rodolfo Rodriguez C., Mcgraw Hill

$49.20

Patrick W. Tank, Lippincott

$42.00

R. Walls - M. Murphy, Lippincott

$50.58

J. Garcia - J. Lopez, Mcgraw Hill

$56.40