$8.40

Julio Sepulvedad S., Mcgraw Hill

$40.80

J. Fuente - G. Heinze, Mcgraw Hill

$30.00

John T. Daugirdas, Lippincott

$86.40

Miriam Guana, Mcgraw Hill

$61.89

D. Cline - O. Ma -, Mcgraw Hill

$134.40

C. Dieguez - R. Yturriaga, Mcgraw Hill

$48.00

Vicente Ortiz, Mcgraw Hill

$61.89

Fernando Guzman Toro, Vadell Hermanos

$14.40

Bezares, Mcgraw Hill

$36.00

Patrick W. Tank, Lippincott

$42.00

Lynn S. Bickley, Lippincott

$125.12

T.w. Sadler, Lippincott

$38.40

Cassimeris

$102.00

S. Agabegi - E. Agabegi, Lippincott

$60.00