
Hi Jenny,
I've had mine a few years but if you go this web site http://www.apbc.org.uk there is a on-line shop so should have lots of books on there for you. The site is the Assoc of Pet Dog Behaviourists by the way :)
Gwen Bailey's books are apparently very good too - should imagine some of hers will be on there - failing that if you google either of their names you should be able to find their web sites (Gwen's anyway, don't know if John has one).
HTH,
Regards, Teri :)