1. Third partial report on Project no. 37 -- study of errors in field artillery practice: subject: analysis of requirements for eliminating errors in laying guns in elevation Author(s): Hatch, Theodore F., authorBrackett, Frederick S. (Frederick Sumner), 1896-1988. authorHorvath, Steven M., author Publication: Fort Knox, Kentucky : Armored Medical Research Laboratory, 6 April 1945 Subject(s): Military Personnel -- educationWeaponsUnited States