First published as part of AS C319-1956 (endorsement of BS 2613:1955 with amendment) Second edition 1958 (endorsement of BS 2613:1957 without amendment).AS C319-1956 revised and redesignated in part as AS 1359.20-1980. First published as part of AS C319-1956 (endorsement of BS 2613:1955 with amendment) Second edition 1958 (endorsement of BS 2613:1957 without amendment). AS C319-1956 revised and redesignated in part as AS 1359.20-1980.