William Kamkwamba
Arundhati Roy
Ivan Doig
United States. Bureau of Plant Industry
United States. General Accounting Office
K. William Easter
Sanyu Consultants Inc
Karnataka (India). Irrigation Dept.
United States. Bureau of Reclamation.
Douglas L. Vermillion
Philippe Cullet
Unknown Author
United States. Congress. Senate. Committee on Energy and Natural Resources.
Espírito Santo (Brazil : State). Secretaria de Agricultura
Adrian Laycock
Kerala, India (State). Public Works Dept.