Foods circulars, 1937. recognition of official certificates, United States of America, Bechuanaland, Brazil, Bulgaria, Denmark, Estonia, Finland, French West Africa, Hong-Kong, Hungary, Iceland, Latvia, Lithuania, Madagascar, Poland, Roumania, Union of South Africa, Southern Rhodesia, Switzerland, Yugoslavia.
Great Britain.Department of Health for Scotland,issuing body.
Great Britain.His Majesty's Stationery Office.
"September 28, 1937".