M. Breskin - K. Dumith, Mcgraw Hill

$69.60

Patrick W. Tank, Lippincott

$42.00

Joseph E. Muscolino, Lippincott

$69.60

S. Joo - A. Kau, Lippincott

$69.12

Burke A. Cunha, Mcgraw Hill

$30.00

D. Fitzgibbon - J. Loeser, Lippincott

$150.00

$8.40

O. Quiros - J. Quiros, Amolca

$50.40

Roberto Arenas, Mcgraw Hill

$62.40

Carlos A. Roldan, Lippincott

$135.60

Esp. y Mgs. Aura M. Parra, Luz

$8.30

Trujillo - Becerra- Rivas, Mcgraw Hill

$111.48

Bezares, Mcgraw Hill

$36.00

D. Cline - O. Ma -, Mcgraw Hill

$134.40

J. Kassirer - J. Wong, Lippincott

$88.80