Edison E. Villalobos A., Edison E. Villalobos A.
$6.17
Roberto H. Frank, Mcgraw Hill
$32.00
A. Chiang y K. Wainwright, Mcgraw Hill
$46.00
Gaceta Nº 6.209, Njr
$1.80
Jose Peña Solis, Paredes
$10.03
Rodrigo Dick Perez Bravo, Alvaro Nora
$8.00