United States
United States. General Accounting Office
United States. Bureau of the Census
United States. Congress. Senate. Committee on Education and Labor.
Thomson Gale
Alexander von Humboldt
United States. General Accounting Office. RCED
Mark Bittman
United States. Congress. House. Committee on Agriculture
Ronald G. Ehrenberg
United States. Congress. House. Committee on Expenditures in the Department of Agriculture
Guangdong Sheng di fang shi zhi bian zuan wei yuan hui
Gordon Sloggett