Sorry, this link might be broken.

https://www.slv.vic.gov.au/sites/default/files/La-Trobe-Journal-93-94-Pieter-Koster.pdf

The website may no longer be active, or the URL of the page may have changed.
It is possible that either https://archive.org/web or http://pandora.nla.gov.au have archived this content.

Thank you.