2191. Government supplies. Supplement 16-18 to Index of Federal specifications, revised to June 1, 1939; Dec. 20, 1939-Jan. 25, 1940. Bookmark Corporate/Agency Authors: Federal Standard Stock Catalog Division, Procurement Division, and Treasury Department Publisher: Federal Standard Stock Catalog Division Date: [1939-40.] SuDoc number: T 58.10/3:ind./939, supp.16-18