General view of an unidentified room at the U.S. Department of Agriculture's Agricultural Engineering Laboratory showing a drillability apparatus with fertilizer hoppers, a starwheel, and rotating plate mechanism.
|Original file type||TIFF|
|View in library catalog|
“Drillability Apparatus at the Agricultural Engineering Laboratory,” circa 1953. Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 4. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/xg94hp56z.
This citation is automatically generated and may contain errors.