J. Hessen, Juceda

$9.60

Margarita A. de Sanchez, Trillas

$39.47

L. Carrera - M. Vasquez, Panapo

$7.48

W. Hurley - C. Denegar, Lippincott

$88.28

Magaly Torres de Cardenas, Ucv

$10.52

Aura Marina Bavaresco, la Universidad Del Zulia

$9.00

Piergiorgio Corbetta, Mcgraw-hill

$45.60

Carlos Lomas, Magisterio

$9.47

F. Kerlinger - H. Lee, Mcgraw Hill

$51.95

Carlos Sabino, Panapo

$6.55

M. Martinez Lurdez, Magrawhill

$30.00

Dorothy Adkins Wood, Trillas

$27.32

Aura Bavaresco de Prieto, Luz

$13.83

Fidias G. Arias, Episteme

$9.65

Margarita A. de Sanchez, Trillas

$39.47