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Any employee of the said Departments of Health or of Agriculture and Commerce authorized by the respective Secretary shall have free access to the factories, warehouses, or depots where tuberculin is kept; he shall also have access to the registration books in which the receipt and the dispatch of tuberculin are entered. History —Apr. 30, 1936, No. 49, p. 282, § 7, eff. 90 days after Apr. 30, 1936.