With the depletion of petroleum fuels in conjunction with their detrimental effect on environment, lignocellulosic feedstocks are being sought for the best alternatives for renewable fuels, materials and chemicals. Agricultural wastes and energy crops can serve as the best sources of lignocellulosic feedstocks. Pretreatment and delignification of the lignocellulosics are the important steps in their utilization. So this book gives some idea of pretreatment and delignifaction processes. It will serve as a reference material for those who are seeking a good resource in this arena. "Go Green, Use Renewable Resources and Save Environment"