Francisco A. Orduña P., Diaz de Santos

$36.00

R. Hyatt - P. Scanlon, Lippincott

$28.20

J. Cloherty - E. Eichenwa, Lippincott

$84.15

D. Cline - O. Ma -, Mcgraw Hill

$134.40

$8.40

Esp. y Mgs. Aura M. Parra, Luz

$8.30

Rebecca L. Shoener, Mcgraw Hill

$42.00

Julio Sepulveda Saavedra, Mcgraw Hill

$108.00

Linda E. Muños Espinosa, Mcgraw Hill

$144.00

D. Fitzgibbon - J. Loeser, Lippincott

$150.00

B. Shakuntala Baliga, Mcgraw Hill

$108.00

Cassimeris

$102.00

Alexandro Bonifaz, Mcgraw Hill

$60.00

Mario A. Hernandez O., Mcgraw Hill

$39.60

Jose F. Gonzalez, Mcgraw Hill

$45.60