Longman student grammar of spoken and written English :
Conrad, Susan.
Longman student grammar of spoken and written English : workbook / Susan Conrad, Douglas Biber, Geoffrey N Leech. - 1st. ed. - Essex : Pearson Education, 2002. - 140 p.
5th impr.: 2005 .
INGLES --GRAMATICA --PROBLEMAS, EJERCICIOS, ETC.
INGLES --GRAMATICA.
421.5 C754l 2002
Longman student grammar of spoken and written English : workbook / Susan Conrad, Douglas Biber, Geoffrey N Leech. - 1st. ed. - Essex : Pearson Education, 2002. - 140 p.
5th impr.: 2005 .
INGLES --GRAMATICA --PROBLEMAS, EJERCICIOS, ETC.
INGLES --GRAMATICA.
421.5 C754l 2002