Expanding the role of biofuels for America : field hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Eleventh Congress, first session, September 1, 2009

Transforming forest waste to biofuels and the renewable fuels standard field hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Tenth Congress, second session, August 18, 2008

Alcoholic beverage control laws : interim report to the 1979 General Assembly of North Carolina, second session, 1980

Hearing to review renewable fuels standard implementation and agriculture producer eligibility hearing before the Subcommittee on Conservation, Credit, Energy, and Research of the Committee on Agriculture, House of Representatives, One Hundred Tenth Congress, second session, Thursday, July 24, 2008

Grains, cane, and automobiles tax incentives for alternative fuels and vehicles : hearing before the Committee on Finance, United States Senate, One Hundred Tenth Congress, first session, April 19, 2007

Alternative transportation fuels an overview : hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session April 18, 2007

Alternative fuels current status, proposals for new standards, and related infrastructure issues : hearing before the Subcommittee on Energy and Air Quality of the Committee on Energy and Commerce, House of Representatives, One Hundred Tenth Congress, first session, May 8, 2007

Food, feed, and fuel production today and tomorrow : field hearing before the Committee on Agriculture, Nutrition, and Forestry, United States Senate, One Hundred Tenth Congress, second session, August 18, 2008

The impact of ethanol use on food prices and greenhouse-gas emissions

The renewable fuel standard : a ten-year review of costs and benefits : joint hearing before the Subcommittee on Environment & Subcommittee on Oversight, Committee on Science, Space, and Technology, House of Representatives, One Hundred Fourteenth Congress, first session, November 3, 2015