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Start Over You searched for: Authors Hatch, Theodore F., author Remove constraint Authors: Hatch, Theodore F., author Subjects Equipment and Supplies Remove constraint Subjects: Equipment and Supplies
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2. 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