Livian Navarro Caro, Panapo

$1.00

Victor Colina, Biosfera

$7.00

Miguel Del Cura, Paraninfo

$38.00

Fe y Alegria, Estudios

$8.00

Luis Quintana, Mcgraw Hill

$10.00

Luis Quintana, Mcgraw Hill

$20.00

Abel Cortese, Planeta

$25.00

Jose Gregorio Bello P., Panapo

$6.00

$1.00

Antonio Perez Esclarin, San Pablo

$6.08

$12.00

Ana Ponce de Leon, Ccs

$12.00

H. Reichmann, Thomson

$35.00

$8.50

Norman E. Gronlund, Trillas

$23.00