Once we start the practice, we come to rely on waste as a fuel commodity, and it's tough to go back to more environmentally sound methods of dealing with it. (treehugger.com)
The development, prevalence, and prognosis for the conduct disorders are discussed, as are the most scientifically - sound methods for assessing problem behaviors. (oslc.org)
The study applies scientifically sound methods to extensively study the lifestyles, health and well - being of children. (sciencedaily.com)