G. Katz - M. Katz, Mcgraw Hill

$6.00

Mercedes Hernandez P., Biosfera

$22.10

Marcela Hinojosa de Coria, Trillas

$8.71

Yris Molina G., Monfort

$12.00

C. Garcia - C. Isturiz, Salesiana

$10.92

Luis E. Rincon, Girasol

$27.50

Maria Pereira-p. Velasco, Trillas

$12.00

$21.31

P. Izquierdo - C. Garcia, Salesiana

$7.11

Yris Molina G., Monfort

$7.20

Maria Pereira-p. Velasco, Trillas

$12.00

Ines Silva Legorburu, Santillana

$11.38

Francisco Avila, Santillana

$13.58

J. Pecina - R. Ma. Rosas, Larousse

$1.38

R. Gomez - H. Cedeño, Manantial

$21.00