NAYLOR, HELEN, HAGGER, STUART
AUDIO CD SET. INSIGHT INTO PET
978-0-521-52757-6 / 9780521527576
978-0-521-52757-6 / 9780521527576
978-1-107-64588-2
NAYLOR, HELEN, ACKROYD, SARAH, REDSTON, CHRIS, CUNNINGHAM, GILLIE
978-0-521-67542-0
NAYLOR, HELEN, MURPHY, RAYMOND
978-1-316-64175-0
CHILTON, HELEN, DIGNEN, SHEILA, FOUNTAIN, MARK, TRELOAR, FRANCES
978-1-316-50351-5
AUTORES VARIOS, CAMBRIDGE UNIVERSITY PRESS
978-84-09-74634-7
ÁLVAREZ CUENCA, ESTHER MARÍA, DÍAZ-PINÉS MANSILLA, GLORIA SOLEDAD
978-84-1088-004-7
978-84-1088-005-4
978-84-1088-002-3