OXFORD LEARNER'S GRAMMAR (FINDER+CHECKER CD-ROM)
978-0-19-437597-9 / 9780194375979
978-0-19-437597-9 / 9780194375979
978-0-19-441493-7
SWAN, MICHAEL, WALTER, CATHERINE
978-0-19-441481-4
SWAN, MICHAEL, WALTER, CATH
978-0-19-441487-6
SWAN, MICHAEL, WALTER, CATHERINE
978-0-19-421476-6
COE, HARRISON, PATTERSON, YULE, GEORGE
978-84-18356-86-5
DOCAMPO NARAY, Mª ISABEL, FRAGA PAZ, REBECA