Double taxation conventions with Belgium and Australia : hearing before a Subcommittee of the Committee on Foreign Relations, United States Senate, Eighty-third Congress, first session, on Executives I (81st Cong., 1st sess.), A (83d Cong., 1st sess.), I (83d Cong., 1st sess.), J (83d Cong., 1st sess.), and K (83d Cong., 1st sess.), Double taxation treaties with Belgium and Australia, June 29, 1953. (U.S. Govt. Print. Off, 1953)