Investor protection [electronic resource] : hearings before a Subcommittee of the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-eighth Congress, first and second sessions, on H.R. 6789, H.R. 6793, S. 1642, bills to amend the Securities Act of 1933, as amended, and the Securities Exchange Act of 1934, as amended, to extend disclosure requirements to the issuers of additional publicly traded securities, to provide for improved qualification and disciplinary procedures for registered brokers and dealers, and for other purposes.