00290nam a2200109Ia 450000500170000000800410001708200180005810000240007624500200010026000500012030000100017020260205055911.0260111s9999||||xx |||||||||||||| ||und||  a025.04  T543D  aTiwari, Purushotham 0aDigital Library  aNew DelhibA P H Publishing Corporationc2008  a285p.