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Start Over Formats Text ✖Remove constraint Formats: Text Subjects Weapons ✖Remove constraint Subjects: Weapons Subjects Equipment and Supplies -- standards ✖Remove constraint Subjects: Equipment and Supplies -- standards Authors Walpole, Robert H., author ✖Remove constraint Authors: Walpole, Robert H., author Dates by Range 1900-1949 ✖Remove constraint Dates by Range: 1900-1949