A. T. de Perez - E. Perez, Larense
$6.00
C. Verde - S. Gentil, Trillas
$20.00
Pamela Lynn, Lippincott
$50.00
Jorge E. Burbano Ruiz, Mcgraw Hill
$35.00
M. Morris Mano - Ch. Kime, Prentice Hall
$22.00
Gaceta Nº 37.308, Ronellys
$1.00
J. Garcia - J. Lopez, Mcgraw Hill
$47.00
Gaceta Nº 38.433, Njr
$1.26
S. Hernandez y Rodriguez, Mcgraw Hill
$52.34