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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 United States Remove constraint Subjects: United States Genre Technical Report Remove constraint Genre: Technical Report Dates by Range 1900-1949 Remove constraint Dates by Range: 1900-1949
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13. 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

nlm:nlmuid-101678214-bk

20. Second 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 panoramic telescope M12 and development of principles of design for an improved instrument

nlm:nlmuid-101678178-bk