Gaceta No 5.022, Njr
$2.00
Marco Aurelio Alegria, el Nacional
$1.00
Tolo M. Rimsky, Mcgraw Hill
$41.00
Roberto H. Frank, Mcgraw Hill
$32.00
H. Koontz - H. Weihrich, Mcgraw Hill
$71.00
J. Badillo-r. Rodriguez, Limusa Noriega Editores
$28.00
Mcphee, Mcgrawhill
$72.60
Horacio Garcia Belsunce, Depalma
$9.26