30 November 1977; Department of Finance; Circular;
9 November 1977; Department of Finance; Circular;
24 October 1977; Department of Finance; Circular;
17 September 1977; Department of Finance; Circular;
14 September 1977; Department of Finance; Circular;
1 August 1977; Department of Finance; Circular;
26 July 1977; Department of Finance; Circular;
29 June 1977; Department of Finance; Circular;
7 June 1977; Department of Finance; Circular;
19 May 1977; Department of Finance; Circular;