TELFORD, Ron J. A'osis Airfield. The History of No. 2 Air Observers School, Royal Australian Air Force 1940-1947 and Royal Australian Air Force and United States Army Air Force involvement with wartime and civil aviation Mount Gambier Airport 1916-1996 Mount Gambier, The Author, 1997. More Add to Cart Price (AUD): $55.00 other currencies Item Details Ask a Question