National Information Center. Part 2, Hearings held in Washington, D.C., July 18 and 19, 1963 : hearings before the Ad Hoc Subcommittee on a National Research Data Processing and Information Retrieval Center of the Committee on Education and Labor, House of Representatives, Eighty-eighth Congress, first session on H. R. 1946, a bill to amend title IX of the National Defense Education Act of 1958 to provide for a Science Information Data Processing Center to be located at one place in Chicago, Ill.