ARO, Incorporated (Arnold Engineering Development Center), hearing, 83d Congress, 1st session, on H. R. 4130, to amend title 5 of Department of Defense appropriation act, 1953, so as to permit continued use of appropriations thereunder to make payments to ARO, Incorporated, for operation of Arnold Engineering Development Center after Mar. 31, 1953, Mar. 26, 1953.

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