000 00358nam a2200145 i 4500
008 991231s1992 sp g spa
080 1 _a802.0
100 _aAITKEN, ROSEMARY
245 0 _aTEACHING TENSES
250 _a1
260 _aWALTON
_b:NELSON
_c,1992
300 _a 17
650 _aLINGUA INGLESA
997 _dFalta ISBN
_e1