Optometry hearings before the United States House Committee on the District of Columbia, Subcommittee No. 4, Eighty-Ninth Congress, second session, on Mar. 21-23, 1966

"Considers H.R. 12937, and six identical bills to revise regulation of optometrists in D.C."@en
"Considers (89) H.R. 13155, (89) H.R. 13623, (89) H.R. 13176, (89) H.R. 13821, (89) H.R. 12937, (89) H.R. 13049."@en

"Optometry hearings before the United States House Committee on the District of Columbia, Subcommittee No. 4, Eighty-Ninth Congress, second session, on Mar. 21-23, 1966"@en
"Optometry : hearings before Subcommittee No. 4, Eighty-ninth Congress, second session on H.R. 12937, H.R. 13049, H.R. 13155, H.R. 13176, H.R. 13623, and H.R. 13821 to regulate the practice of optometry in the District of Columbia, March 21, 22, and 23, 1966"@en
"Optometry. Hearings before Subcommittee No. 4, of the Committee on the District of Columbia, House of Representatives, Eighty-ninth Congress, second session ... March 21, 22, and 23, 1966"