TY  - BOOK
AU  - Bull,William E.
TI  - Time, tense and the verb: a study in theoretical and applied linguistics, with particular attention.to Spanish
U1  - 465.8/B872t 
PY  - 1971///
CY  - Berkeley, Estados Unidos 
PB  - University of California Press.
KW  - LENGUA ESPAÑOLA - GRAMATICA - VERBO
ER  -