American energy security and innovation : an assessment of North America's energy resources : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, February 5, 2013.

American energy security and innovation : an assessment of North America's energy resources : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, February 5, 2013.

American energy security and innovation : an assessment of private-sector successes and opportunities in energy efficient technologies : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, Tuesday, February 26, 2013.

American energy security and innovation : an assessment of private-sector successes and opportunities in energy efficient technologies : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, Tuesday, February 26, 2013.

American energy security and innovation : the role of a diverse electricity generation portfolio : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, March 5, 2013.

American energy security and innovation : the role of a diverse electricity generation portfolio : hearing before the Subcommittee on Energy and Power of the Committee on Energy and Commerce, House of Representatives, One Hundred Thirteenth Congress, first session, March 5, 2013.