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Start Over You searched for: Formats Text Remove constraint Formats: Text Collections World War 2, 1939-1949 Remove constraint Collections: World War 2, 1939-1949 Subjects Military Personnel -- education Remove constraint Subjects: Military Personnel -- education Subjects United States Remove constraint Subjects: United States Languages English Remove constraint Languages: English Copyright Public domain Remove constraint Copyright: Public domain

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7. Fourth partial report on Project no. 37 -- study of errors in field artillery practice: subject: an analysis of the sources of error in the use of the aiming circle and development of an improved instrument