The Allocation of Radio Frequency and Its Effect on Small Business: Hearings Before the Subcommittee on Activities of Regulatory Agencies of the Select Committee on Small Business, House of Representatives, Ninetieth Congress, Second Session, on H. Res. 53, a Resolution Creating a Select Committee to Conduct Studies and Investigations of the Problems of Small Business. Washington, D.C. February 20 and 21, 1968; Washington, D.C. June 7, 1968; Detroit, Mich., June 10-11, 1968; Los Angeles, Calif., July 29, 1968; Chicago, Ill., October 4, 1968, Volumes 1-2