Experiments on living animals. Return to an address of the honourable the House of Commons, dated 28th June, 1939--for "return of licences granted under the Act 39 & 40 Vict. c. 77, showing the number of experiments performed under the act during 1938 and the registered places at which such experiments may be performed (in continuation of parliamentary paper no. 149 of session 1937-38)" [electronic resource].