id author title date pages extension mime words sentence flesch summary cache txt crl-10298 Bennett, Mary A. New Microfilm Reading Machines 1947-06-30 4 .pdf application/pdf 2249 127 68 The full width of unperforated 35mm. film is pro- jected on the screen at the same time. The edges of unperforated film may be brought into view by a scanning device. cache/crl-10298.pdf txt/crl-10298.txt