There are two directories which list industry professionals.  These are The Encore Directory and The Production Book.

The two main magazines that service the Australian Film Industry are Encore-The Production Magazine and IF-Inside Film.

The above publications can provide productions with a good resouce for talent, services, equipment rentals, etc.

The Encore Directory & Magazine can be obtained from Read Business Information. 

Website: www.encoremagazine.com.au/

The Production Book can be obtained from PB Publishing
Website: www.productionbook.com.au

IF - Inside Film
Website: www.if.com.au