Refinery certificates and analysis details, 1923 -1925. Conf. 147.

Shell Australia Limited, Refinery certificates and analysis details, 1923 -1925. Conf. 147. (1923-1925), [UMA-ITE-2008004501661]. University of Melbourne Archives, accessed 13/12/2025, https://archives.library.unimelb.edu.au/nodes/view/310050