Trove is the Australian National Library's search engine, used to access the holdings of hundreds of Australian libraries, including university libraries. You can keep up to date with books newly added to Trove on your topic by conducting a search and setting up an RSS feed.
Most publishers provide an email or RSS feed alert service to let you know when they have published new books on particular topics. Most of these alerts are based on broad disciplines, such as 'law', and cannot be narrowed further. Links to the alert services web pages of some academic law publishers are listed below.