Plant Variety Protection Expired Certificate Number 7500041 Excell Lettuce

Chicago citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972. Plant Variety Protection Expired Certificate Number 7500041 Excell Lettuce. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17392845. (Accessed October 21, 2018.)
APA citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972, Plant Variety Protection Expired Certificate Number 7500041 Excell Lettuce. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/17392845
MLA citation style
Department of Agriculture. Agricultural Marketing Service. 4/2/1972. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/17392845>.
Note: These citations are programmatically generated and may be incomplete.