Pub. L. 83-176, tit. I, sec. 103

Sec. 103. Where appropriations in this title are expendable for the purchase of newspapers and periodicals and no specific limitation has been placed thereon, the expenditures therefor under each such Appropriation may not exceed the amount of $50: Provided, That this limitation shall not apply to the purchase of scientific, technical, trade, or traffic periodicals necessary in connection with the performance of the authorized functions of the agencies for which funds are herein provided.