C. Verde - S. Gentil, Trillas
$20.00
Jose Peña Solis, Paredes
$10.03
A. Mclennan - A. Bates, Mcgraw Hill
$32.00
H. Rondon de Sanson, Paredes
$7.50
Robert S. Feldman, Mcgraw Hill
$40.00
Salvador Zubiran, Mcgraw Hill
$56.00
Jose I. Hernandez, Juridica Venezolana
$14.20
Freedy J . Orlando S., Ucv
$13.49