found: Annual field burning report, 1989-1991.
found: Lau, M. The Willamette Valley open field burning controversy, 1976(Field burning)
found: Forestry.about.com website, Mar. 2, 2007("prescribed burning" is defined in: A Guide for Prescribed Fire in Southern Forests, as fire applied in a knowledgeable manner to forest fuels on a specific land area under selected weather conditions to accomplish predetermined, well-defined management objectives; "prescribed fire", controlled application of fire to the land to accomplish specific land management goal, human or naturally caused)
found: Andreau, A.G. Effects of fall prescribed fire on regeneration from the seed bank of two western Washington grasslands, 2005.