NOTE.—These specifications are now so completely covered by the Military Index, volumes 2, 3, and 4 published by the Army, the Navy, and the Air Force, semiannually and kept current by monthly supplements, that listing in the Monthly Catalog of United States Government Publications represents unnecessary and wasteful duplication of effort. For that reason they will no longer be listed. Complete information on the three indexes of specifications and related publications referred to, will be found in the Appendix to the February 1958 issue of the Monthly Catalog under Entry numbers 2009, 2031, and 2670.