Languages: English / Genre: Monographs and Photographic prints / Copyright: Public domain - Digital Collections - National Library of Medicine Search Results

Start Over Languages English ✖ Genre Monographs ✖ Genre Photographic prints ✖ Copyright Public domain ✖

1. Key punch machine for coding diseases and defects onto statistical cards

Publication:: United States. Government Printing Office, 1919
Archival Collection:: Risk Factors: Measuring and Rating Health, Illness, and Mortality (Profiles in Science)

2. A sorting machine for coded statistical cards

Publication:: United States. Government Printing Office, 1919
Archival Collection:: Risk Factors: Measuring and Rating Health, Illness, and Mortality (Profiles in Science)