It was republished without licence by Dennis McMillan Publications, USA in 1990. Only 450 copies were published, and they are hard to find and expensive. As I write this an AddAll book search found five copies with prices ranging from US$200 to US$650.
I republished Gripped by Drought with Lulu.com today. The cost of this new edition is US$42.95.
Copies are available online from my Arthur Upfield Bookshop.