Index of Suggestions made to Improvements Board, Feb. 1930 - Mar. 1934. Plus index of suggestions made to Improvements Board, 1930 - 1934. Vol. no. 323, SR5B.

Shell Australia Limited, Index of Suggestions made to Improvements Board, Feb. 1930 - Mar. 1934. Plus index of suggestions made to Improvements Board, 1930 - 1934. Vol. no. 323, SR5B. (1930-1940), [UMA-ITE-2008004501498]. University of Melbourne Archives, accessed 11/12/2025, https://archives.library.unimelb.edu.au/nodes/view/309887