was it Dot and the Kangaroo???
sounds familiar to me too
try Ward Sagar Book shop in Eltham vic
they are a school book stockist and I am sure they will know it!
will do some research myself!!
Hahaha I was going to say that myself as an ex-employee!!!!!!

Ring Kay or email her - she has run the shop for 25 odd years and is brilliant at that sort of thing.