E. Rodriguez - F. Suarez, Romor
$17.00
Salvador Zubiran, Mcgraw Hill
$56.00
J. Badillo-r. Rodriguez, Limusa Noriega Editores
$28.00
Lind - Marchal - Wathen, Mcgraw Hill
$51.91
Luis Fraga Lo Curto, Funeda
$7.00
H. Koontz - H. Weihrich, Mcgraw Hill
$72.00