TY  - BOOK
AU  - Gruber, Diann
TI  - Writing elementary
SN  - 0194534049
U1  - 421 
PY  - 1990///
CY  - Oxford : 
PB  - University Press, 
KW  - Teaching - aids and devices
KW  - Material de enseÑanza
KW  - Writing - exercises
KW  - Ejercicio de escritura
ER  -