R. Hyatt - P. Scanlon, Lippincott

$28.20

Patrick W. Tank, Lippincott

$42.00

J. Kassirer - J. Wong, Lippincott

$88.80

M. Nordin - V. Frankel, Lippincott

$96.00

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.49

Leonard Crowley, Mcgraw Hill

$68.40

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

$46.80

Maria A. Obando, Ula

$12.00

Alexandro Bonifaz, Mcgraw Hill

$60.00

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00

Francisco A. Orduña P., Diaz de Santos

$36.00

O. Quiros - J. Quiros, Amolca

$50.40

Insp, Mcgraw Hill

$31.20

J. Fuente - G. Heinze, Mcgraw Hill

$30.00

C. Stone - R. Humphries, Mcgraw Hill

$108.00