Astronomy Geographic Advantage Act: Declaration of Sutherland Central as astronomy advantage area (Gazette 37434 General Notice 199) 
https://newsletter.po.creamermedia.com/article/astronomy-geographic-advantage-act-declaration-of-sutherland-central-as-astronomy-advantage-area-gazette-37434-general-notice-199-2014-03-12
12th March 2014
Astronomy Geographic Advantage Act: Declaration of Sutherland Central as astronomy advantage area (Gazette 37434 General Notice 199)