Alberto Arias Amaro, Romor
$7.00
Fraga Garcia, Trillas
$19.50
Carlos A. Ledesma, Buyatti
$27.19
Gaceta Nº 40.157, Njr
$3.50
D. Eiteman - A. Stonehill, Prentice Hall
$35.00
C. Verde - S. Gentil, Trillas
$20.00
A. Chiang y K. Wainwright, Mcgraw Hill
$46.00
Carlos Moros Puentes, Juridicas Rincon
$6.00