TY  - SER
AU  - Trieste, Robert F. van.
TI  - The relation between Puerto Rico University students' attitudes toward americans : : and students' achievement in english as a second language
T2  - Homines. Revista de ciencias sociales ; 
PY  - 1990///
CY  - San Juan-PR : 
PB  - Universidad Interamericana de Puerto Rico, 
ER  -