Freddy Suarez Figueroa, Romor
$7.13
Jaime Rodriguez-arana, Juridica Venezolana
$5.40
F. Kerlinger - H. Lee, Mcgraw Hill
$43.29
Roberto H. Frank, Mcgraw Hill
$32.00
Gaceta No. 39.627, Ml
$8.00
Jorge E. Burbano Ruiz, Mcgraw Hill
$35.00
S. Joo - A. Kau, Lippincott
$57.60
Marco A. Romero Rivero, Vadell
$7.00