I'm intrigued. What's the title of the book are you talking about? Is it the Australian Medicines Handbook [0]? The MIMS Annual [1]? Or something else?

[0] https://shop.amh.net.au/

[1] https://www.mims.com.au/index.php/products/mims-annual

Royal children's paediatric, so I guess AMH-CDC. https://shop.amh.net.au/cdcbook

But it might've been specific to some editions.