F. Kerlinger - H. Lee, Mcgraw Hill

$51.94

Alexis G. Perez, Fedupel

$12.51

Carlos Sabino, Panapo

$6.55

Marcos Fidel Barrera, Quiron

$11.48

Yilmar Campbell, Universidad Carabobo

$9.60

Margarita A. de Sanchez, Trillas

$39.46

Rafael Benitez Dominguez, Cadiz

$14.73

Magaly Torres de Cardenas, Ucv

$10.52

S. Dominguez - E. Sanchez, Mcgraw Hill

$24.00

Dorothy Adkins Wood, Trillas

$27.32

Aura Marina Bavaresco, la Universidad Del Zulia

$9.00

Piergiorgio Corbetta, Mcgraw-hill

$45.60

Aura Bavaresco de Prieto, Luz

$13.82

Marcos Fidel Barrera, Sypal

$13.56

Margarita A. de Sanchez, Trillas

$39.46