United States. General Accounting Office
Booker T. Whatley
John Nix
Morris, Edmund
United States. Agricultural Research Service
Unknown Author
Ronald D. Kay
Jilin Sheng di fang zhi bian zuan wei yuan hui
Cato the Elder
J. P. Kimmins
J. du P. Bothma
Maurice Grenville Kains
Michael Levatino
Peter J. Barry
Edward Laurence
Emery N. Castle
Yu-gu Sŏ
William Kauffman Scarborough