Letter - Correspondence, Reference from the Ballarat School of Mines for Ong Gim Sen, 1966, 24/02/1966 Physical description Carbon copy reference from E.J. (Jack) Barker, Principal of the Ballarat School of Mines for student Ong Gim Sen. Subjects ballarat school of mines, e.j. barker, colombo plan, international students, reference, ong gim sen
