James-otis Rodner S., Academia de Ciencias

$7.20

Antonio Espinoza Prieto, Buchivacoa

$8.40

Antonio Espinosa Prieto, Buchivacoa

$14.97

Ivan Mirabal Rendon, Universitas

$12.00

I. Gutierrez- D. Querales, Buchivacoa

$8.40

Fernando Villasmil B., Libreria Europa

$7.20

W. Sanguineti - C. Carbal, Ucab

$9.49

Frederick Cabrera Conde, Ediciones Mutare

$12.00

Jesus R. Torres Pertuz, Paredes

$11.11

$12.00

Oscar Hernandez Alvarez, Aiadtss

$8.40

Luis Eduardo Mendoza, Vadell

$1.20

Alayon - Carballo - Daza, Ucab

$10.98

Toyn F. Villar V., Libra

$12.96

Ivan Mirabal Rendon, Universitas

$12.00