000 00356nam a2200145 i 4500
008 991231s1991 sp g spa
020 _a0582068592
080 1 _a802
100 _aALEXANDER, L.G.
245 0 _aSTEP BY STEP 3
260 _b:LONGMAN
_c,1991
650 _aINGLES / GRAMÁTICA
997 _e2