Essential grammar in use :
Murphy, Raymond.
Essential grammar in use : a self-study reference and practice book for elementary student of english / Raymond Murphy. - 2a. ed. - Cambridge : Cambridge University Press, 1997. - 300 p.
INGLES --GRAMATICA --PROBLEMAS, EJERCICIOS, ETC.
INGLES --TEXTO DE ESTUDIO.
421.5 M978e 1997
Essential grammar in use : a self-study reference and practice book for elementary student of english / Raymond Murphy. - 2a. ed. - Cambridge : Cambridge University Press, 1997. - 300 p.
INGLES --GRAMATICA --PROBLEMAS, EJERCICIOS, ETC.
INGLES --TEXTO DE ESTUDIO.
421.5 M978e 1997