Food additives--extension of transitional provisions: hearings before the Committee on Interstate and Foreign Commerce, House of Representatives, Eighty-seventh Congress, first session on H.R. 3980, a bill to amend the transitional provisions of the act approved September 6, 1958, entitled ""An act to protect the public health by amending the Federal food, drug and cosmetic act to prohibit the use in food of additives which have not been adequately tested to establish their safety,"" and for other purposes. February 28 and March 1, 1961.