Bitumen Secretarial 1946 - 1954 and Colas Meetings 1951 - 1955, vol. 6.

Shell Australia Limited, Bitumen Secretarial 1946 - 1954 and Colas Meetings 1951 - 1955, vol. 6. (1946-1955), [UMA-ITE-2008004501683]. University of Melbourne Archives, accessed 22/09/2026, https://archives.library.unimelb.edu.au/nodes/view/310072