That book was a one off as far as I know. I did try to get an extra copy at one point but the authors didn't have any available.
The reunion was in the mid 1980s. We've had a few mini- reunions in various locations in rural NSW and Queensland but those few who organised them back then are tied up with other commitments and run out of steam.
Off topic: pity the thread has been targeted by spammers - wouldn't you think the website owners could do something about removing them!!!
I'd leave my postal address and contact details here for you but am reluctant to do so given the amount of spamming that has gone on!
Cheers
Ainslie.